Yougfin Twist Drill Bits, M35 HSS with 5% Cobalt from 1/16″ to 3/8″ Drill Bit Set, 135-Degree Cutting Point, Round Handle, Ideal for Drilling Cast Iron, High Temperature Alloy, Rigid Plastic with Storage Case, 21Pcs
(as of Oct 16,2022 18:57:54 UTC – Details)
Yougfin Drill Bit Set
MATERIAL：M35 High Speed Steel+ 5% Cobalt
Clearly, the best drill bits for hardened metal or steel come with a cobalt blend. These cobalt drill bits use an alloy including 5%–8% cobalt. This cobalt makes up part of the steel blend, so the hardness of the bit doesn’t wear off with a coating (like titanium bits).
- Round Straight Shank
- 135° Split Point
- Double Fluted
Ideal for Drilling Cast Iron, High Temperature Alloy, Rigid Plastic
- When drilling a hole with a cobalt bit, add a drop of oil on the metal to keep the cutting edge cooler as it cuts. You also want to consider placing some wood underneath the steel if possible. This lets you cut cleanly through the material and not strike a surface below which might dull the cutting edge.
- Twist drills are rotary cutting tools that normally have two cutting edges and two flutes which are grooves formed in the body to provide cutting lips, to permit the removal of chips and to allow coolant or cutting fluid to reach the cutting action.
- Please keep the bit perpendicular to the mateial during operation to prevent it from breakage
Package Dimensions : 6.18 x 4.45 x 1.46 inches; 1.5 Pounds
Date First Available : May 17, 2022
Manufacturer : Yougfin
ASIN : B0B1HFKKH2
Country of Origin : China