Subrosa Rose Cranks style: RHD (right-hand drive) / LHD (left-hand drive) compatible material: post-weld heat-treated chromoly spindle: 19mm hollow chromoly spindle | 48 spline spindle bolts: 3/8 inch x 24tpi flush mount (x2) arm length: 160mm color: black additional information: oversized welds includes bottom bracket 1 piece CNC spindle bosses