The TOOPRE OTR36 is a four-piece aluminium crank spindle spacer set for compatible crankset and bottom bracket assemblies. Choose 24mm ID x 32mm OD or 30mm ID x 36mm OD, with the 30mm option also compatible with SRAM DUB. Each pack includes 1mm, 1.5mm, 2mm and 3mm thicknesses. CNC machined with a black anodized finish. Malaysia ready stock.