Stock diameters run from 1.5 to 18.75 in. and stock finished bores from 0.5 to 1.5 in. "H" bushings for bushed-style FHP come in either inch or millimeter finished bores. Stationary, adjustable Variable Pitch (VP) Sheaves feature both single and double-groove designs. Stock diameters range from 2.5 to 7.5 in., with stock finished bores from 0.5 to 1.0375 in. These sheaves suit a wide variety of HVAC applications.