BSD's Substance Cranks utilise a 2.5 piece design for ease, securing the whole crank set with just one bolt. The arms are made from heat-treated 4130 Chromoly with a rectangle cross section for extra stiffness and a beefy pedal boss for increased strength with an angled back for frame clearance. The heat-treated spindle features a 22mm diameter and 48 splines. The BSD Substance Cranks are both RHD and LHD compatible and now come with a free installation tool. ###section### Product Specs Crank Type: 2.5 Piece Drive Type: Bolt Drive Spindle Diameter: 22mm Drive Side: Left & Right Compatible Includes BB Bearings: No Weight: 884g (31.2oz) ###shogun-image-section###