Be 100% sure of drive belt/pulley or sprocket/chain alignment
Press the tool against the pulley or sprocket and in just seconds a laser light will illuminate
the chain links or belt to show belt or chain alignment and real running direction
Gives immediate, exact results
Also shows if motorcycles rear wheel is in the correct position
Extends chain and sprocket or drive belt life
Dot C.A.T. is recommended for chain alignment and Line C.A.T.
for belt alignment, but both will work for both chain and belt alignment