Variable Pitch Adjustable Sheave or Pulley.. They available  in a light duty (1VL) or standard duty and single and double groove (1VP or 2VP) These variable pitch adjustable sheaves come wioth standard keyway and two knurled set screws. Statically balanced with grey painted proctective coating. Example for ordering Light Duty... Variable Pitch Adjustable Sheave or Pulley.. They available  in a light duty (1VL) or standard duty and single and double groove (1VP or 2VP) These variable pitch adjustable sheaves come wioth standard keyway and two knurled set screws. Statically balanced with grey painted proctective coating. Example for ordering Light Duty...