Birzman Lockring Socket 12mm Shimano® HG™
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Features ∅12mm center pin for thru axel hubs.
Compatible with Shimano® HG™ & SRAM® Cassettes, Shimano® Center Lock, or other similar 12-spline ∅23.4mm lockrings.
Specification
- Functions: ½".
- Material: Alloy steel (socket) / Aluminium (center pin).

