The Avenger A9000NB 100 mm Ø braked wheels are designed to fit chrome black steel and black aluminum stands with square legs which are 20 mm x 20 mm (0.8 inch x 0.8 inch) or 25 mm x 25 mm (0.98 inch x 0.98 inch). This set of 3 black braked wheels comes complete with the mounting hardware and the locking screw and nut. These wheels fit many black stands such as Avenger combo stands, Combi Boom stands and overhead stands. Recommended Accessories: G100-2, G200-1, 087WBK, A1020B, A1035B, A1045B, C1575B, E600, C500, C150.