Fit designed the Blunt Cranks to stand up to grinds without having to be aggressively shaped and then cut ankles. The investment cast "Blunt" spindle bosses and flush mount bolts eliminate sharp edges to reduce that risk of cut ankles. Fit's unique concave "indented and swaged 100% heat-treated CrMo arms increase the strength and dent-resistance of the cranks during grinds/slides. A hollow 24mm heat-treated CrMo spindle is both strong and light helping reduce the overall weight without sacrificing on durability at all. ###section### Product Specs Crank Type: 3-Piece Drive Type: Bolt Drive Spindle Diameter: 24mm Drive Side: Left & Right Compatible Includes BB Bearings: Yes Weight: 850g (30oz) w/o BB ###shogun-image-section### Colour: Black, Gloss Clear, Chrome; Size: 175mm, 160mm, 165mm, 170mm