Single Speed Chain Tensioner,Folding Bike Chain Stabilizer for Single Speed Folding Bike 1.The single speed chain tensioner has exquisite workmanship, full CNC precision machining, anodized coloring, laser engraving logo, suitable for single speed folding bicycles 2.The bike chain tensioner adopts bearing shaft, which can be matched with various guide wheels. The guide wheel generally uses 11 teeth, but can also use 13 teeth 3.The bike tensioner is made of high-quality aluminum alloy material, which is hard, stable and durable, and can be used for a long time 4.Folding bike chain stabilizer can effectively prevent the chain from falling off due to instability during riding 5.The folding bike chain stabilizer has exquisite workmanship, stylish appearance, stable workmanship, convenient installation and disassembly, and simple operation Specification: Item Type: Single Speed Converter Material: Aluminum Alloy Advantages: Exquisite workmanship, full CNC accurate machining, anode color, laser engraving sign, bearing shaft, can be matched with a variety of guide wheels, the guide wheel generally uses 11 teeth, but also can use 13 teeth Purpose: Single Speed Folding Bike Package List: 1 x Single Speed Converter