Super b TB-1946 Derailleur Hanger Alignment Gauge key

Achieve flawless gear changes with the SUPER B TB-1946 Derailleur Hanger Alignment Gauge. This essential workshop tool diagnoses and corrects misaligned hangers—the 1 cause of skipping gears, slow response, and chain noise. By ensuring your hanger is perfectly straight, you restore crisp, reliable shifting and protect your derailleur from catastrophic damage. Its professional-grade, telescoping design is universally compatible with 20 to 29+ wheels, empowering any home mechanic to achieve a quiet, efficient, and perfectly tuned drivetrain