Steel

Key Product Feature: 1. If you buy it , please measure the size 2. Compatible with 9/16 inch pedals. Will Not be compatible with Micargi Beach Cruiser's stock pedals. 3. Compatible with 44mm Bottom Bracket 4. If your bike is 2" cup, pls use a bottom bracket converter Black BB Bottom Bracket Conversion Kit (American to Euro)-Gas Motorized Bicycle 5. The distance between the pedal crank arms is about 266mm/10.47inch Chrome Wide Crank w/ 44T Sprocket, works with 410 chain. This part allows you to convert a 1 piece crank into a 3 piece crank Wide cranks are required for 4-stroke or pull start bicycle engine kits. Product description The distance between the pedal crank arms is about 26.6cm/10.47inch These are intended to be used on a 26" cruiser style frame Bottom Bracket crank included for 9/16 inch pedals; Thank you for looking, if you have any questions, feel free to ask and I will do my best to get back to you promptly!Products usually shipped on the second business day and you will receive message of tracking ID.CDHPOWER is registered officially in year 2012 and started business in year 2008, we can provide engine kits, high performance spare parts of engine, motorized bicycle and spare parts of bike.