Studio Pro 3/4-Inch Grinder Bits are chrome hardened for performance, strength and durability. Bit fits all Diamond Tech Max grinders. Also fits Inland and Glastar glass grinders, except Glastar G-5. Compatible with the following grinders: Inland Wizling CG, Inland Wiz CG, Inland Impulse Touch-Top, Inland Wizard, Diamond Tech Power Max II, Standard and Deluxe, Glastar Superstar II G-12, Diamond Tech Diamond Max Standard and Deluxe, Diamond Tech Bevel Max.