Derailleur Hanger Alignment Tool Replaceable Cycle Rear Derailleur Hanger Gauge Alignment Tool with Measuring Rod

This professional-grade tool checks and corrects rear derailleur hanger alignment during maintenance. It measures and adjusts misaligned hangers for smooth gear shifting. Built with a long aluminum alloy main rod with matte dark finish, a sliding support bracket, and a stainless steel measuring rod. Features an engraved scale and a multi-point-shaped tightening knob. Equipped with a T-handle end piece, inner shaft, and washers for comfortable leverage.