Grooves 5, Rotation CW, Thread size M16-1.50, Outer Diameter 56.80, Belt type Multi Belt, Depth 6.60, Free run w/, Width 1 42.80, Groove Measurement 1 17.50, Rear Distance 0.00, Bore dia. 17.00, Remarks Attention: Always change OADTM pulleys with the same OADTM technology – To prevent damages and loss of warranty in case of failures., Pulley type OAD