Phas-Lok Adjusting Hubs provide easy and accurate phase adjustment. The Phas-Lok Adjusting Hub is an economical, yet precision device. It provides an easy way to change the phase relationship of a drive component and the shaft. It is ideal for fine tuning timing adjustments, adjusting for chain elongation, and sprocket tooth wear. The Zero-Max Phas-Lok provides an accurate, mechanical adjustment within a 24 degree range. (+/- 12 degrees)

Parameter Name	Parameter Value
Type	rigid
Other characteristics	shaft-hub