1 . Alignment Tool : A correction tool used for the alignment of bike rear derailleur , which ensures higher cycling safety and stability .
2 . Using Tips : Directly screw the tool into chain lifter hanger . There is a gauge on the rod to measure the distance to the wheel . Then , as the wheel rotates the gauge to 90° , 180° , 270° and 360° , note any differences in the measured values . Align the derailleur hanger by applying pressure to the tool arm . The results can be checked immediately .
3 . Good in Design : Comes with 400mm length , the tool enables simple, largely simplifying your working and improving efficiency .
4 . Great Material : Adopting premium aluminium alloy material with a sturdy structure , not easy to deform and very durable for long using .
5 . Easy Carrying : Light in weight and compact in size as well , the tool can be conveniently carried for both indoor and outdoor work .

Spec :
Item Type : Derailleur Hanger Alignment Gauge
Material : Aluminium Alloy
Length : Approx . 400mm / 15 . 75in

PackageList :
1 x Derailleur Hanger Alignment Gauge
3 x Accessory