MEROCA Bike Hook Aligner Bicycle Derailleur Alignment Corrector 360° Rotation Bike Tail Hook Measure Straighten Repair Tools Color:1Pcs Tensioner:alloy chain tensioner

Tensioner:alloy chain tensioner

Classification: Left/Right shift lever

Brand: MEROCA rotary front wheel fixing trainer

Name: Four-piston hydraulic disc brake

MEROCA Bike Hook Aligner Bicycle Derailleur Alignment Corrector 360° Rotation Bike Tail Hook Measure Straighten Repair Tools Color:1Pcs Tensioner:alloy chain tensionerBrandMeroca Material: aluminum alloy Weight: about 720g Function: Used for bicycle derailleur hanger alignment and correction This is an indispensable shop tool that can be used to both measure and straighten misaligned derailleur hangers solving a high percentage of shifting problems. Simple to use The Derailleur Hanger Alignment Gauge can help solve a multitude of derailleur shifting problems, most notably with index shifting systems. This tool is