1 x Knott brake drum 200 x 50 mm with compact bearing 34/64 x 37 mm including flange nut and grease / cover cap Knott item no. 28745C02 for Knott wheel brake 20-2425/1 as well as Nieper & Schlegel wheel brake 963/1 & 964/1 bolt circle: 5x5x112mm On the anchor plate of your wheel brake - next to the brake cable inlet - you will find the name for your wheel brake. The matching brake pads, as well as Bowden cables - can be found in the shop.