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Product Description | ||||||||
Product Name | High Precision 8.5mm HSS Cobalt Brocas Drill Bits for Metal Stainless Steel | |||||||
Material | HSS Cobalt (M35 Co5%/M42 Co8%) | |||||||
Process | Fully Ground | |||||||
Standard | DIN338 | |||||||
Size | 1-13mm | |||||||
Point Type | 135 Degree Split Point (Also have 118 Degree Regular Point, Turbo Max Point, Pilot Point) | |||||||
Shank Type | Straight Shank (Also have Tri-Flats Shank, Hex Shank, Double R Hex Shank, Reduced Shank, Threaded Hex Shank, Taper Shank ) | |||||||
Surface Finish | Amber Color (Also have Black Oxide, Black & Gold) | |||||||
Package | 10/5 Pcs in PVC Pouch, Plastic Box, Individually in Skin Card, Double Blister, Clamshell | |||||||



Product Size | ||||||||||
Diameter (mm/inch) | Flute Length (mm/inch) | Overall Length (mm/inch) | Diameter (mm/inch) | Flute Length (mm/inch) | Overall Length (mm/inch) | |||||
1.0 3/64" | 12 3/4" | 34 1-3/4" | 9.5 23/64" | 81 3-1/2" | 125 4-7/8" | |||||
1.5 1/16" | 20 7/8" | 43 1-7/8" | 9.5 3/8" | 81 3-5/8" | 125 5" | |||||
2.0 5/64" | 24 1" | 49 2" | 10.0 25/64" | 87 3-3/4" | 133 5-1/8" | |||||
2.5 3/32" | 30 1-1/8" | 57 2-1/4" | 10.5 13/32" | 87 3-7/8" | 133 5/1-4" | |||||
3.0 7/64" | 33 1-1/2" | 61 2-5/8" | 11.0 27/64" | 94 3-15/16" | 142 5-3/8" | |||||
3.5 1/8" | 39 1-5/8" | 70 2-3/4" | 11.5 7/16" | 94 4-1/16" | 142 5-1/2" | |||||
3.5 9/64" | 39 1-3/4" | 70 2/7-8" | 11.5 29/64" | 94 4-3/16" | 142 5-5/8" | |||||
4.0 5/32" | 43 2" | 75 3-1/8" | 12.0 15/32" | 101 4-5/16" | 151 5-3/4" | |||||
4.5 11/64" | 47 2-1/8" | 80 3-1/4" | 12.5 31/64" | 101 4-3/8" | 151 5-7/8" | |||||
5.0 3/16" | 52 2-5/16" | 86 3-1/2" | 13.0 1/2" | 101 4-1/2" | 151 6" | |||||
5.5 13/64" | 57 2-7/16" | 93 3-5/8" | 13.5 17/32" | 108 4-13/16" | 160 6-5/8" | |||||
5.5 7/32" | 57 2-1/2" | 93 3-3/4" | 14.0 35/64" | 108 4-13/16" | 160 6-5/8" | |||||
6.0 15/64" | 57 2-5/8" | 93 3-7/8" | 14.5 9/16" | 114 4-13/16" | 169 6-5/8" | |||||
6.5 1/4" | 63 2-3/4" | 101 4" | 14.5 37/64" | 114 4-13/16" | 169 6-5/8" | |||||
7.0 17/64" | 69 2-7/8" | 109 4-1/8" | 15.0 19/32" | 114 5-3/16" | 169 7-1/8" | |||||
7.5 9/32" | 69 2-15/16" | 109 4-1/4" | 15.5 39/64" | 120 5-3/16" | 178 7-1/8" | |||||
7.5 19/64" | 69 3-1/16" | 109 4-3/8" | 16.0 41/64" | 120 5-3/16" | 178 7-1/8" | |||||
8.0 5/16" | 75 3-3/16" | 117 4-1/2" | 16.5 21/32" | 125 5-3/16" | 184 7-1/8" | |||||
8.5 21/64" | 75 3-5/16" | 117 4-5/8" | 17.0 43/64" | 125 5-5/8" | 184 7-5/8" | |||||
9.0 11/32" | 81 3-7/16" | 125 4-3/4" | 17.5 11/16" | 130 5-5/8" | 191 7-5/8 | |||||









Q: Are you factory or trading company?
We are manufacturer with over 15 years' experience in this product, we can arrange video factory inspection.
Q: Is OEM available?
A: Yes, OEM, ODM and customization are available.
Q: Are samples available?
A: Yes, you can ask some samples for testing after confirming our prices, but please pay the sample and freight fee, the sample fee will be returned to you after you making official order.
Q: What is your payment terms?
A: T/T, L/C, D/A, D/P, PayPal, Western Union, Alibaba Trade Assurance for different circumstances.
Q: What's your delivery way?
A: Express delivery, air shipping, sea shipping, train shipping are available for your request.
Q: What's your delivery time?
A: For bulk order, delivery time according factory production plan. Usual customized product, 15-45 days after receiving the advance payment.
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