Features: Made of aluminum alloy and stainless steel, this tool has excellent durability and strength. The tool is subjected to quenching, hardening, and heat treatments, resulting in a high hardness level. The tool has excellent accuracy and precise dimension. The edges is chamfered to ensure a smooth and round-surface without damaging your hand during use. Enhances your bike maintenance routine with the Bike Crank Arm Wrench, a must have tool for cycling enthusiasts and repair professionals. Specifications: Material: aluminum alloy and stainless steel Type: Normal/Upgraded Size: As shown in the picture Package Includes: 1x Crank Cover Removal Tool note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.