Superior pump handle American Pumpers Association. High quality enhancement pump with incredible suction for maximum results. Newly designed master grip finger pull hand pump. Flexible air hose. Quick release purge valve. Smoked cylinder with universal incremental measurements. Flanged base for use with or without the included Silicone tapered sleeve. ABS with Silver Plating (handle), Phthalate free PVC (hose), SAN (cylinder), Silicone (sleeve.) Cylinder is 2.25in in diameter.