Upgraded Solid Model: 9/16 " to 1/2"; Which means the female side of this bike adapter is 9/16 inch and the male is 1/2 inch. If you want to install a 9/16" bike pedal on a bike with 1/2 threads on the crank, this is what you need.
Super Durable & Anti-rust: Hikenture bike pedal adapters are made of high-quality chrome-molybdenum steel, waterproof, anti-rust, anti-corrosive and provide a long lasting performance.
Easy To Install: L for left; R for right. Install it in the correct direction with the appropriate wrench.
Sold by pair,only applicable for 9/16" pedals, CAN'T APPLICABLE 1/2".