It can be applied to all wood, copper, iron and part of thin stainless steel is also applicable. The surface is treated with titanium alloy to improve the cutting performance and wear resistance of the drill, and extending the service life.
Archives
TOPEC Tap Bit Set, 3-in-1 HSS Titanium Coated Combination Drill and… Fast Ship
Manufacturer : Topec. #117 in Countersink Drill Bits. It can be applied to all wood, copper, iron and part of thin stainless steel is also applicable. The surface is treated with titanium alloy to improve the cutting performance and wear resistance of the drill, and extending the service life.