Tool holders type D in carburized and hardened steel hardness 60 HRC. You can fit in them rapidly all the Polledri counterbores and countersinks of the same group. We advise them for CNC Machines and always when you need to adjust the counterbores.so you can use them for heavy cutting.
Tool holders type A in carburized and hardened steel hardness 60 HRC. You can fit them rapidly all the interchangeable counterbores an countersink Polledri of the same group. These Tool holders have morse taper shank.
Tool holders type B in carburized and hardened steel hardness 60 HRC. You can fit them rapidly all the interchangeable counterbores an countersink Polledri of the same group. These Tool holders have straight shank.
Tool holders type BW in carburized and hardened steel hardness 60 HRC. You can fit them rapidly all the interchangeable counterbores an countersink Polledri of the same group. These Tool holders have Weldon shank.