Zymoplas Versatile Bicycle Dropout Derailleur Hanger Alignment Gauge for and Road Bikes

Professional Bike Frame Derailleur Hanger Alignment Gauge that can measure and straighten the misaligned transmission hanger, solving most of the shifting problems Wheel replaceable threaded tip is improved after the large inner axle increases the resistance tolerance more strictly, improves the clearance accuracy and the extension range improved to fit more frame / handlebar combinations, including small clearance through the shaft transmission hanger For variable for lug for many speed variations, especially for post-position variable speed systems. An essential tool for cycling enthusiasts Strong and durable,Improve performance, to work on more frame/derailleur hanger combos Made of aluminum alloy and stainless steel, durable and practical