Shimano 9Spd IG/HG M-22/M9 N-22 Chainring 22T Inner Ring 64BCD Granny Gear Steel   Very common part, found on everything with 4 bolts, almost! Fits most Shimano MTB Chainsets with 64mm BCD Inner Ring bolt pattern.   4 Bolt Shimano Inner Ring, extended tabs to prevent Chain dropping between Crank & Bottom Bracket 64mm BCD (Bolt Circle Diameter) Polished Silver finished Steel SG-X / HG-X Compatibility Good Condition with Minimal Wear, very little use.    Weight: 41 grams   Condition: Used