10pcs 1.5mm-6mm M35 High Speed Steel Titanium Hex Twist Drill Bit w 1/4" Shank Bore Timing Pulley Pipe Diameter (ID x OD):

Pipe Diameter (ID x OD): 32mm x 39mm / 1

After natural relaxation

98-inch (L x W xH )

*It is also have addition two characteristics: first

Screw Thread: M6

10pcs 1.5mm-6mm M35 High Speed Steel Titanium Hex Twist Drill Bit w 1/4" Shank Bore Timing Pulley Pipe Diameter (ID x OD):1. The hex drill bit is made of M35 cobalt high speed steel with sharp edge. The surface is coated with titanium, which has higher hardness, better wear resistance and longer service life than ordinary drills. 2. 1 4 " hex shank, which can quickly replace the drill bit, eliminates the frustration of the handle rotation on the chuck, and makes it easier to quickly lock to the chuck. It is suitable for most electric hand drills and drilling machines. 3.