The Wheels Manufacturing 386 EVO Adaptor is designed to adapt a 386 EVO bottom bracket shell to accept a 24mm Shimano crankset spindle. This allows cyclists to use their favorite cranks with a 386 EVO bottom bracket shell, which is commonly found on road and gravel bikes. The Wheels Manufacturing 386 EVO Adaptor is CNC machined from high-quality aluminum alloy for durability and precision. It installs easily into the bottom bracket shell with no special tools required. The adaptor is compatible with Shimano cranksets that use a 24mm spindle diameter, including road and mountain bike cranks.