Buna-rubber diaphragm. Suitable for gasoline, diesel, fuel oil, light motor oil. Cannot be used for corrosive solvents, acids and alkalis. Includes 2" bung, steel handle, 7-1/2" x 3/4" hose with nozzle and 35" telescopic suction tube with check valve. Hose has built in anti-static wire. Suitable for 15 to 55 gallon drums. Flow rate of 1 litre/stroke.