Mark Burnett signature cranksetDesigned with flat sides to be ankle friendly, while the rounded top is ideal for crank slides4130 chromoly construction with oversized welds for improved rigidity and strength1 piece cnc machined spindle bossesLHD or RHD compatible designPost weld heat treatment1-piece CNC spindle bossesHollow 22mm, 48 spline spindleBMX160mm22mmBLK1B907g1sUPC/EAN/GTIN: 810006214062