Parameter: Width: 70mm Length: 160+90mm Center height: 80mm Slot height: 16mm Stroke: 80mm Bottom parameters: Disc diameter: 100mm Aperture: 100mm Small aperture:? 20mm Packing size: 6KG Package weight: 403025CM Packing List: 1 AT300 lathe tool post assembly. AT300 Lathe Tool Post Assembly Aperture Universal 100mm Disc Diameter Durable. Universal AT300 lathe Tool Post Assembly Holder MetalWorking Mini Lathe Part 8cm. 1 AT300 lathe tool post assembly. Welcome to autumnzhang002?? Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday. Original size design fits perfectly. Creative Design, Durable Material, Beautiful Appearance. ?? Reliable Quality??? Easy installation??? Ideal Gift??? Durable MaterialBeautiful AppearanceGood Performance.