Grease Coupler, Product Type Grease Coupler, Wetted Material Buna-N, Steel, Compatible with Series Not Applicable, For Use With Grease, Includes Grease Fitting Zerk for Quick-Connect with the Grease Coupler, Compatible with Brand Not Applicable, Compatible with Manufacturer Model Number Not Applicable 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)