Enhanced chain tension Our floating pulley and spring-adjustment mechanism deliver optimal chain tension, improving drivetrain efficiency and pedaling smoothness on varied terrain, from rough mountain trails to urban commutes. This singlespeed chain stabilizer reduces slipping for a consistent pedal effort. Lightweight aluminum build Constructed from high-quality aluminum alloy, this 60 g chain tensioner adds minimal weight while providing exceptional strength. The durable design withstands daily riding conditions and environmental factors for longer life. Broad compatibility for singlespeed bikes Designed for singlespeed and folding bikes, this oval chainring plate modification works with a range of frame designs. Size 13 x 9 x 5 cm ensures a reliable fit for most singlespeed setups, enhancing rider confidence and performance. Easy installation No special tools or technical knowledge required. The user-friendly design allows quick installation in minutes, compatible with standard single-speed components, so you can get back on the road fast.