Traditional JIS square taper track crankset.High quality performance and finish at a reasonable price.Light and rigid forged alloy crank arms with polished CNC finish.Integral 5 arm track standard 144 BCD spider.Sizes: 170mm arms - Weight 643g (661g for powder coated)Recommended BB: JIS Square taper 68 x 107/110mm.Colours: Polished Silver, White powder coated or Black anodised..