Used/ LIKE NEW under 100 miles ride SRAM RED Crank arms 170mm (53T/39T 10SPEED) with 53T CHAINRING only. 3M protective film on cranks. I removed it after bout 100 miles and switched for 172.5mm suit to me better. Sram Red-optimized PowerGlide 7075-T6 alloy chainrings with ramps/pins; and alloy chainring bolts. 695g (130 BCD) @ 170mm with separate BB30 bearing set interface: BB30 length: 170mm color: Carbon speed: 2x10 Note: Spindle and Pedals Not including. Red Box is not belong to this set (it’s 172.5’s box, it’s marked on box) and May Not ship with box. Thank you for checking on this item.