Constructed from sturdy aluminum, the crank arm set is designed to fit 110/74 BCD 5-bolt rings and features lightweight 42/26t aluminum chainrings. Compatible with 10/11-speed setups, this product is ideal for those looking for a straightforward option with the added benefit of fast double-shifting. Perfect for riders tackling steep inclines, the set also includes a protective aluminum chainguard for the larger chainring. With a JIS square taper and available in silver or black anodized finish, the set includes a 113mm BB spindle for a 47.5mm chain line or a 110mm BB spindle for a 45mm chain line.