Choose from several designs to fit your specific setup. The 9.5mm rod with ball fits most cowbells, percussion mounts, floor tom brackets, Gibraltar TL2 & TL3 tom brackets and old Ludwig. The 10.5mm rod with ball fits Ludwig, Tama, Premier, GMS, N&C, Gibraltar TL2 & TL3 tom brackets, and some Yamaha & Roland electronic pads. The 12mm rod with ball fits DW Brackets and Gibraltar TL2 & TL3 tom brackets.