Description Product Name : Hand Wheel;Material : Plastic, Metal;Center Bore Diameter (.) : 12mm / 0.47 Wheel Diameter (.) : 99mm / 3.9Revolving Handle Size (.) : 19 x 62mm / 0.7 x 2.4 (Max D * H);Wheel Thickness (.) : 17mm / 0.6 Hex Socket Size (.) : 7mm/0.27Wheel Height(without handle) : 24mm/0.9 Color : Black;Weight : 179g Feature: 3 Spoke, 3.9amp; Wheel Dia, 12mm Bore Dia. Design with revolving handle, hand wheel has threaded hole for easy handle assembly. It is widely used in industrial machine tools, such as milling machine, lathes, grinders etc. Package Content : 1 x Hand Wheel 1 x Revolving Handle Note:Light 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.