6Pcs HSS Steel Titanium Step Drill Bit Set 4-12/20/32mm

Type

Groove

Hand Shank

drill

A

Straight groove

Triangular Shank (6,8,10mm)

Yes

B

Straight groove

1/4" Hex Shank 6.35mm

Yes

C

ral groove

1/4" Hex Shank 6.35mm

Yes

D

Straight groove

Triangular Shank (6,8,10mm)

Yes

E

Straight groove

1/4" Hex Shank 6.35mm

Yes

F

ral groove

Triangular Shank (6,8,10mm)

Yes

G

ral groove

1/4" Hex Shank 6.35mm

Yes

[Special Note]: H(high breaking capacity); Our products are divided into two hardnees, HRC62 and HRC67. The first material is HRC61 (marked as A-B-C on the picture), drilled plastic, wood, and aluminum are all right. But if you need to drill steel or plates, or want a longer tool life, we recommend that you choose the second material HRC67 (D-E-F-G is indicated on the picture). [Specification]: 4 - 12mm 5 Steps (4mm,6mm,8mm,10mm,12mm) 4 - 20mm 9 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm) 4 - 32 mm 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm) drill: 3mm, 6mm, 8mm. Note: In the Type C and G, 4-12 is 9 Steps (4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm) [Advantages]: 1. Step drill is triangle round handle or hexagonal handle, prevent sliping. The and drill is a round handle. 2. "X" shaped openings, drilling is not easy to slip. Higher precision, more sharp, burr-free drilling. 3. The gold is titanium coating, more wear and oxidation resistance, not rust. 4, The unique step structure, a drill can drill a variety of sizes of the aperture. You can deburring, chamfering, punching elliptical hole. 5. The hardne of the workpiece below the use of 25 ° below, such as , aluminum, PVC board, insulation board, wood, workpiece thickne 4mm. 6. Suitable for installation in the drill and bench drill. [Packaging]: As shown in the picture, there are ordinary plastic bags, blue cloth bags, a single pull-out box, and a beautiful red box.

Material and scope of application

Wood, plastic, PVC board

plate

Aluminum plate

Carbon steel

Sheet metal

304 stainle steel

201 stainle steel

Tiles, wall

HSS 4241

Yes

Yes

Yes

No

No

No

No

No

HSS 6542/M2

Yes

Yes

Yes

Yes

Yes

Yes (Not durable)

No

No

HSS-CO/M35

Yes

Yes

Yes

Yes

Yes

Yes

Yes (Not durable

No

Note: When the edge of the edge of the drill to cool down (you can add cold water, add cold oil, blowing compreed air), can effectively extend the life of the drill, drill speed 250-400 rpm is recommended.

About shipping
Shipping and Packaging All itwill be double checked and well packed before sending.Itwill be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties ores. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very important to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.