Feature: 1. With the trait of smooth surface, bright color, not faded and corrosion resistance. 2. Elliptical Design: Eliminate trampling dead point, enlarge power distance for the fine starting point, solve chain skipping problem, save more effort and increase speed, without any hindrance or noise. 3. Wide Applied for Mountain, , BMX, Road, Fixed Gear, Folding Bikes 4. A fine replacement for bike repairing and upgradation. Specification: Features: With the trait of smooth surface, bright color, not faded and corrosion resistance. Elliptical Design: Eliminate trampling dead point, enlarge power distance for the fine starting point, solve chain skipping problem, save more effort and increase speed, without any hindrance or noise. Wide Applied for Mountain, , BMX, Road, Fixed Gear, Folding Bikes A fine replacement for bike repairing and upgradation. Specifications: Material: Aluminum alloy Type: 5 claw folding crank Color: black, red, silver (optional) Weight: 675g crank, 105g central axis Length: 170mm BCD130mm Item weight: 820g / 1.8lb Package size: 300 * 150mm / 11.8 * 5.9in Package weight: 823g / 1.8lb Packing List: 1 * Center Shaft 1 * Center Shaft Screw 1 * Screw Tool 5 * Pairs Single Screw Package List: 1 * Center Shaft 1 * Center Shaft Screw 1 * Screw Tool 5 * Pairs Single Screw