Shop Our Equipment › Grease Jockey Injector #4, 4 Output Spacers, 0.25 cc (0.015 cu in) Grease Jockey Injector #4, 4 Output Spacers, 0.25 cc (0.015 cu in) $0.00 Designed for frequent, medium-pressure metering and includes system pressure monitoring. Quantity: Add To Cart Added! Designed for frequent, medium-pressure metering and includes system pressure monitoring.