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3pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case
| Procuct Name | 3Pcs 3 Flats Shank Straight Groove Cone Titanium HSS Step Drill Bit Set for Metal Tube Sheet Drilling in Wooden Case |
| Size | 4-12mm, 4-20mm, 4-32mm (Inch Size is Available) |
| Material | HSS (Cobalt M35 is Available) |
| Flute Type | Straight Flute (Spiral Flute is Available) |
| Flute Number | Two Flutes (Single Flute, Three Flutes are Available) |
| Shank | Three Flats Shank (Quick Change Hex Shank, Round Shank, Double R Shank are Available) |
| Surface Finish | TiN (Bright, Black & Amber, Co-coated, Black Oxide, Black & Bright, TiAIN are Available) |
| Package | 3Pcs in plastic bag (Nylon Bag, Plastic Box, Double Blister, Metal Box, Aluminum Case are Available) |
| Features | 1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm. 2. 135° Split Point Tip: increases cutting speed with self-centering and the drills do not run off center. 3. A variety of hole diameters can be drilled using only one tool. 4. The dimension of drilled hole is exact. 5. Two Flute Design: provides longer life and better chip removal. 6. Titanium coating provides up to 2 times the life over high speed steel. 7. Only for rotary use. |




HSS is a high hardness step drill bit that is mainly applied for drilling cast steel plate, iron steel plate, alluminium alloy plate, etc.
This item is not suitable for Stainless steel





Hangzhou Xiaoshan Changyu Metal Machinery Co., Ltd., established in 1982, China leading manufacturer of hole saws and drill bit.
With more than 20 years' OEM experience, our products enjoy great popularity in Eastern Europe, Western Europe, North America and the Middle East.
We have supported over 200 hundred customers, including super markets, wholesales, distributors around the world.
Our durable quality and best performance will help you enlarge your market share and enhance your brand in your market.

Q: Are you trading company or manufacturer?
A: We are professional drill bit and hole saw set wood manufacturer since 1982
Q: Can you provide samples?
A: Yes, we can provide samples for free, but you should be responsible for the freight cost.
Q: What is your terms of payment?
A: 30%T/T in advanced, 70%T/T after receive the emailed copy of original BL.
Q: What is your MOQ?
A: MOQ is different for each item, you need to check with the sales person. But we need at least US$5000 for each LCL shipment.
Q: How about the delivery time?
A: Some items can be shipped in 15days after receive the payment. Some customized item need 30~40days after receive the advanced payment.

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