Take it to the MAX! Enhancement pumps with a powerful single-hand Master Grip handle designed to deliver maximum results Maintains pressure when air hose is released Flexible air hose Quick release purge valve 2 translucent cylinders with superior suction base for secure seal Dimensions: Pump Set Large: 9 x 2.25 in. Pump Set X-Large: 9 x 2.75 in. Package: 4 x 6.5 x 13.5 in.