Attention Head Pumpers this is the real deal! American Pumpers Association. Compact seamless cylinder for intense vacuum. EZ grip squeeze trigger handle. Removable tapered donut for maximum seal. Flexible non-crimping hose. Push button release valve. Safe and pure for body and pleasure made using phthalate free materials SAN cylinder, ABS plastic handle, release valve, ABS plastic with silver plating handle grip, PVC hose. Bulk weight 7.1 ounces. 3.5 inches by 2.25 inches cylinder. 3 inches pump diameter.