With our Article nr. 110 you can position correctly the studs of cycling shoes. So cyclists could avoid to have problems at tendinitis especially at the Achilles tendon. Mount the pedals, lock in the shoes to the pedals, approach as much as possible the front parties to the reference which locates the cranks' position. Then approach the shoes 's heel to the transparent plate and verify the position of pedal cranks, the scale 1-14 for the shoe's alignment, the scale 1-18 for the shoes advancing and moving back.