Bike Chain Guide - MTB Cycle Single-speed Chain Tensioner - Anti Skidding Auxiliary Device with Hollowed Single Disc Sprocket - Adapt to 13 to 23T Mountain Bicycle

Highlights

• Perfect Chain Tension: The stainless steel spring and floating pulley of this single-speed chain tensioner can let the chain be stably stressed and ensure perfect tension for your chain to make you pedal with fewer efforts.
• Anti-drop Chain Design: Floating pulley and spring design can well fit the various size of the gear and prevent the chain from slipping out of the crank.
• More Compatible: It can be compatible with the mountain bike which has 13 to 23 gears.
• Use Conveniently: The use and installment of this bike chain guide are convenient. Great accessory for cycling lovers.
• High-quality Material: Made of selected aluminum alloy material, this bike chain guide is excellent in workmanship, durable for long service life, practical, and anti-rust.