GST Lathe Cartridge Toolholder System Finally, something new in lathe toolholders – with the GST Cartridge Toolholder System – eliminate the need to change toolholders, just change the cartridge to change the style and size of insert. This unique family of lathe toolholders offers: Increased Machine Up-time Improved productivity for Turning and Boring operations by reducing toolholder exchange times by up to 75% Reduce the cost of tool crash recovery by 25% Reduce Toolholder inventory cost Supports the full spectrum of insert styles – Trigon, Triangle, Round, Rhombic and Positive Inserts– without toolholder changes Triangle are held by a novel "Gripper-Cartridge" that grips the insert on three sides and clamps on top to eliminate movement during profiling cuts of hardened tool steels of 62 Rc+. Use with all cutting inserts: Carbide, Ceramic, CBN, PCD Model 120 Lathe Toolholders 3/4" square Model 160 Lathe Toolholders 1.0" square Model 200 Lathe Toolholders 1-1/4" square Model 240 Lathe Toolholders 1.50" square also available > Click for more info on cartridges