Shimano SM-RT30 Center Lock Steel Lock Ring is a lock ring for fixing the center lock specification disc rotor of 15 / 20mm thru axle.
[FEATURE]
・ Center lock ring for fixing the disc rotor
・ Through axle for 15mm and 20mm hubs
・ With internal and external tool holders
・ Please use TL-LR11 or TL-FC36