Primo Churchill Cranks (24mm / 160mm -175mm) Half Link Federal have also changed the

Federal have also changed the material from Aluminum 6061 to 6066 which increases the strength by approximately 30%

direct power transfer

Plastic protective back

Made of durable 7075 aluminum

Cannot pull apart even under heavy braking forces

Primo Churchill Cranks (24mm / 160mm -175mm) Half Link Federal have also changed theStevie Churchill's signature 3 piece heat treated 4130 Chromoly crank features a custom arm shape & comes w a Primo 24mm bottom bracket. Specifications: Spindle: 24mm Hollow 4130 Chromoly Spindle Bolts: 18x1mm Hollow Flush Mount (x2) Spindle Splines: 48 Drive Side Compatibility: Left & Right Sprocket Bolt: 10x1. 5mm (x1) 8x1. 25mm Nano (x1) Color: Matte Black & Chrome Weight: 28. 6oz (175mm Length w o BB) 39oz (w BB)