Standard Pack = 1 piece(s). Designed for heavy-duty, high temperature lubricating applications. The Oil feed rate is adjustable. A lock ring maintains the setting.Three position toggle switch provides easy to use on-off control, and a flushing option to avoid dry start-upsVented sight chamber ensures proper operation when used with tight or high speed bearingsCopper brazing of all steel connections provides Long life and leak-proof designNickel plating offers superior corrosion resistanceOil sight for visual indication of Oil flow