The Tiny-Clutch 1692 One-Way Clutch is based off of our D75PM Roller Clutch. This clutch features heavy duty springs, a 1/4" | 6.4 mm bore & mounts to the shaft with a set screw. This clutch is available in Left hand drive & replaces Pellerin Milnor part # 54M105. If you have special needs for your application please Let Us Know.