ITEM NAME:12mm Bore 100mm Diameter Hand Wheel for Milling Machine O3X6 12mm Bore 100mm Diameter Hand Wheel for Milling Machine O3X6 Come with revolving handle, hand wheel has threaded hole for easy handle assembly. Widely used in industrial machine tools, such as milling machine, lathes, grinders etc. Product Name : Hand Wheel Material : Plastic, Metal Center Bore Diameter (Approx.) : 12mm / 0.47 inch Wheel Diameter (Approx.) : 100mm / 3.94 inch Revolving Handle Size (Approx.) : 21 x 55mm / 0.8 x 2.1 inch (Max D x H) Hex Socket Size (Approx.) : 6mm / 0.23 inch Thickness (Approx.) : 12mm / 0.4 inch Color : Black Weight : 132g Package Content : 1 x Hand Wheel Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Widely used in industrial machine tools, such as milling machine, lathes, grinders etc. Thickness (Approx.).