This bike crank arm bolt is made of high strength aluminium alloy, and with exquisite workmanship, which makes it strong, durable and has a long service life. Surface adopts anodic oxidation treatment, with bright color, corrosion resistance. The fine design with precise machining, fits crank perfectly and offers professional fixation of crank. Feature: 【STURDY AND DURABLE】This bike crank arm bolt is made of high strength aluminium alloy, and with exquisite workmanship, which makes it strong, durable and has a long service life, lightweight yet durable, compact design makes it convenient to carry or store. 【LATEST PROCESSING TECHNOLOGY】Surface adopts anodic oxidation treatment, with bright color, corrosion resistance. The second smoothly treatment, the fine craftsmanship, makes its personality shine. 【PRACTICAL BICYCLE TOOL】The fine design with precise machining, fits crank perfectly and offers professional fixation of crank. Used to fix the the crankset and crank of the chain wheel, necessity accessory for cycling. 【LIGHTWEIGHT AND STABLE】The bike crank arm bolt is lightweight and and stable, without adding any durden, professional manufacturing, stable performance and high reliability. This product is very suitable for your daily use. Specification: Item Type: Bike Crank Arm Bolts Material: Aluminum Alloy Size: Approx. 18mm/0.7in Weight: Approx. 18.0g/0.6oz Quantity: 2Pcs Application: for Prowheel Hollow Integrated Crankset Package List: 2 x Bike Crank Arm Bolts