Grease Filler Pump, Features Easy to Use Grease Filling Solution to Load Bulk or Combination Grease Guns From Bulk Grease Pails, Handle Three Positions to Handle Grease of Varying Viscosities, For Use With NLGI 1 and 2 Grease, Adapter Material Aluminum, Steel, Zinc, Compatible Chemicals Grease, Housing Material - Pumps Aluminum, Steel, Zinc, Max. Head Pressure 30 psi WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, and Di-isodecyl phthalate (DIDP), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. - Nickel (Metallic)