DYC bicycle chain single speed 1/2"x1/8"112link Rust-proof/wear-resistant/strength for BMX/Dirt Jump/Fixed Gear/Track/Bike Trial

DYC bicycle chain single speed 1/2"x1/8"112link Rust-proof/wear-resistant/strength for BMX/Dirt Jump/Fixed Gear/Track/Bike Trial

Aliexpress UK