Indexable Tool Bit 1/2" Shank for Fly Cutter Replaceable TNMG16 Carbide Insert
Supplied with a TNMG16 ( 3 face x 2 sides cutting edge) which is replaceable as soon as this is worn out. Just screw a new one, and your tool is new and good to go again. Shanks are precisely machined to square and then ground.