Material: aluminum 7075 CNC
Color: red / black
Weight: about 80g
Shape: Round / OVAL
Applicable for SHIMANO ALIVIO M4000 M4050 and for SRAM NX GX X1 crank
1. Narrow wide tooth profiling prevents chain drop.
2. Exquisite workmanship with high technology that the chain can effect better.
3. It is portable and durable.
4. Easy to use and to operate.
5. Positive tooth corresponding chain tooth width; tooth corresponding negative chain is narrow.