3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
7 / 8
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill
43% OFF
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3Pcs 3-12mm 4-12mm 4-20mm Straight Groove Step Drill

$23.99 $41.99
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Features:

100% Brand New and High Quality
Made from high quality HSS steel
Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.
Titanium coated to reduce mit and heat
Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.
3 sided shanks design in order to prevent slippage when in chuck
Two flute design drives faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps


Function: Deburring, Chamfering, Cutting or expanding holes
Supporting tools: Pistol drill, Hand drill, Charging drill, Bench drill. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)
Rotating speed:
3-12 speed:260-400
4-12 speed:260-400
4-20 Speed:180-240

Attention:Because of the outer diameter of each step of the step drill is gradually expanded,then the corresponding cutting resistance and linear velocity will also be gradually increased.
Owing to the step drill is completely dependent on the inclined edge that is only with 1mm length,If the feed speed is too fast when drilling,it will be easily to be annealing caused by abrasion of the oblique edge.
Please give a downward force when drilling, do not press down too hard to avoid the edge wearing.

Suitable material: Workpieces with general hardness, such as wood, plastic, PVC plate, iron plate, plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching.  (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)

Length: 

3-12mm Length: Approx. 7.9cm/ 3.11"
4-12mm Length: Approx. 6.7cm/ 2.64"
4-20mm Length: Approx. 7.4cm/ 2.91"

The  Cutters Come in the Following Sizes:
3-12mm(3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm) 10 Steps
4-12mm: (4mm, 6mm, 8mm, 10mm, 12mm) 5 Steps
4-20mm:( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)9 Steps

Package included:

1 x Drill Bit  3-12mm
1 x Drill Bit  4-12mm
1 x Drill Bit  4-20mm




FREE SHIPPING on orders over $79 (or $5.99 shipping fee to worldwide)

(Since a lot of good and inexpensive goods are produced in Hong Kong, most of the items on our website are produced in and sent from Hong Kong to the whole world, and a small part is from Malaysia).

The product you purchased will be shipped out in 48~72 hours by Air Parcel Register Shipping Service.

Air Parcel Register Shipping Service: It usually take about 15-25 business days to be arrived. We will send the tracking number to you after the order was shipped out.

(Business days are Monday-Friday. Holidays, Saturday and Sunday are not included in shipping days).

*Return/Refund Policy*

7 Days NO REASON to return. You could return items to us if you do not satisfied with it. Our return policy is to contact us within 7 days after the package is delivered. If 7 days have gone by since package delivered, unfortunately we can’t offer you a refund. Please note that the cost of shipping return is paid by you.

Bunhery believes in quick and easy returns, and wants to make this process as easy as possible for you.

7 Days NO REASON to return, the return policy is to contact us within 7 days after the package is delivered. If 7 days have gone by since package delivered, unfortunately we can’t offer you a refund. Plz note that the cost of shipping return is paid by you.

Please note that the tracking number of shipping return should be sent to us within 3 days after we sent you the return address, or the process of canceling the order will be cancelled.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

There are certain situations where only partial refunds are granted; Any item not in its original condition, is damaged or missing parts for reasons not due to our error.

To return your product, contact us using our contact page and we will provide you with our current return address.

 

For full details, read our full Return Policy below:

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

To complete your return, we require a receipt or proof of purchase. 

There are certain situations where only partial refunds are granted; Any item not in its original condition, is damaged or missing parts for reasons not due to our error.

 

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. 

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment.

The refund will be given to you within 5 days after we receive the return items.

 

Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again.

Then contact your credit card company, it may take some time before your refund is officially posted.

Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact us at [email protected]

 

Exchanges (if applicable)

We will replace items if they are defective or damaged.

 

Shipping

To return your product, contact us using our contact page and we will provide you with our current return address.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable.

 

WHERE IS MY ORDER SHIPPED?

Since a lot of good and inexpensive goods are produced in Hong Kong and Malaysia, most of the items on our website are produced in and sent from Hong Kong and Malaysia to the whole world, and a small part is from America.

 

HOW TO TRACK MY ORDER?

If you have created registered an account you can simply log in and check your order status under "my account".


HOW LONG WILL IT TAKE FOR MY ITEMS TO ARRIVE?

We use Air Parcel Register shipping method: 

  • Air Parcel Register shipping takes 15-25 business days.

ABOUT CUSTOMS TAX?

Taxes may apply for imported goods/services and is regulated by the country law. Hinstars is not responsible for any tax invoice charged on its products. Shipping rates are estimates and may depend on different policies and tax rates applied per country. Please contact local customs for clarity and information.

 

HOW DO I EXCHANGE AN ITEM/ORDER?  

You can exchange a purchased product within 7 days after the package is delivered. If 7 days have gone by since package delivered, unfortunately we can’t offer you a refund. Please note that the cost of shipping return is paid by you.

Please note that the tracking number of shipping return should be sent to us within 3 days after we sent you the return address, or the process of canceling the order will be cancelled.

To be eligible for an exchange, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

To exchange an item or order, contact us using our contact page and we will provide you with our current return address.


HOW DO I RETURN AN ITEM/ORDER?

You could return items to us if you do not satisfied with it. Our return policy is to contact us within 7 days after the package is delivered. If 7 days have gone by since package delivered, unfortunately we can’t offer you a refund. Please note that the cost of shipping return is paid by you.

Please note that the tracking number of shipping return should be sent to us within 3 days after we sent you the return address, or the process of canceling the order will be cancelled.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

There are certain situations where only partial refunds are granted; Any item not in its original condition, is damaged or missing parts for reasons not due to our error.

To return your product, contact us using our contact page and we will provide you with our current return address.

 

HOW LONG WILL IT TAKE TO RECEIVE MY REFUND?

We will process your refund request shortly after being informed of your intentions. However, the estimated time for the refund to return to your account is based on the payment method you selected when placing your order. Below please find enlisted the most common processing times:

Payment Method Refund Time Once Approved
PayPal Express Checkout Within 14 business day
Qiwi, Webmoney, Yandex,iDEAL, Giropay, CashU, Sofort. Within 14 business days
Boleto Within 14 business days
Western Union Wired Payment Within 14 business days
Credit Card Refund within one business day, but bank processing may take 7-14 natural days to show in your account
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