Golf cart brake drum/hub assembly fits for 1982-up Electric Vehicles. The drum is held in place by a castellated nut (5/8-Inch x 18tpi) and a thick (.118-Inch) flat washer and will NOT operate with a keyed axle/hub interface. This brake hub/drum is a replacement for the earlier hub & drum and has star spline instead of the straight key. It has a 3/4-Inch center hole with a 24-tooth star spline. This is only for the brake drum. When replacing this brake drum, check the Hub assembly as well. Warm tips: Hub spline and Rear Axle Shaft Spline should be matched tightly. If one of them is wear out, both of them should be replaced at the same time, or the hub spline will strip soon. Material: Metal colour: black Package Contents: 1 x brake assembly Only the above package content, other products are not included. 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.