Tracking chain guide ISCG 03 05 BB middle locking chain device $ 5.94 Material: 7075 aluminum alloy CNC; nylon Support specifications: ISCG 03, ISCG 05, threaded BB bottom bracket (press-in type is not currently supported) Support range: disc 30-40T tooth piece, oval disc 30-38T Advantages: This chain guide is very light in weight, with a design that is stable and does not drop the chain, and the anti-chain drop rate is 99%. Easy to install, ISCG03 and 05 can be installed without removing the chainring. The appearance is simple and generous, and the colors are gorgeous and sassy.
