Easy to use: This is great because it prevents slack in the chain on BMX, children's bicycles, and any single-speed bicycle. Easy to install and durable
Product material: Made of high-quality stainless steel, durable, sturdy and durable, and can be used for a long time
Features: Floating pulleys and springs adjust the chain tension perfectly, which can tighten the bicycle even more
Widely used: Suitable for tracks with rear forks, BMX and stationary bicycles, very suitable for mountain bikes
Package content: 4 pieces of bicycle chain tensioner, size: 4.8*2.5*0.9cm, color: light silver