Apollo Premium Power Pump is a professional grade vacuum pump with easy squeeze trigger handle. Removable air hose easily detaches while maintaining suction. "Harder, stronger, longer...Apollo is the new standard!" - The American Pumpers Association. Heavy-duty oversized seamless cylinder with flanged base and universal measurements. Apollo Premium Power Pump features a flexible non-crimping hose with quick disconnect, silicone donut and quick release valve. Materials: PS (cylinder), ABS (handle), ABS with Silver Plating (trigger), Silicone (donut), Phthalate-Free PVC (hose), POM (connector), Ferric (connector release). Dimensions: 9.5" x 3.25"/24.25 cm x 8.25 cm (cylinder). Cylinder base outside measurement 2.75 inside measurement 2.50.