BLACK OPS Micro Drive CHAINRINGS 21903
CHAINRING BK-OPS 30T MICRO DRIVE ALY BLK Micro Drive 72774219032 1-PIECE 30T CNC machined 6061-T6 alloy Fits 1pc and 3pc BMX cranks - 23.8mm hole for 1pc cranks with shims for 19/22mm 3pc cranks included Hard anodized coating Unique 1/8` quiet drive technology 1pc/3pc 30T Black 1/2` x 1/8` Standard 30T BLACK