New shrink-fit toolholders for machining centers and multitask machines are available from Kennametal Inc. The shrink-fit program is split into two lines. The GP (General Purpose) line for carbide, HSS and steel shanks can be accommodated with clamping torques suitable for most general machining tasks. For heavy roughing that requires a higher clamping torque or for cutting difficult-to-machine materials, the HT (High Torque) is recommended. The HT line has a 30 to 50 percent higher clamping torque than the GP line. The shrink-fit holders accommodate steep taper, HSK, BT, CV and DV back ends.