12T 13T 14T Single Speed Cassette Cog Black Red Gold Silver Bicycle Freewheel
£12.81
Specification: 12T 13T 14T. The flywheel is made of high-resistant stainless steel, whose strength and hardness are twice that of ordinary 316 stainless steel, and the hardness reaches 18 degrees. Color: black/ red/ gold/ silver.
