Ultra-Premium Pump 12in. Wide - Transparent. This Ultra-Premium Pump 12” Wide comes with a total cylinder length of 32.5 cm (12”) and an inner diameter of 5.8 cm (1.9”). this high-quality pump gives you sample possibilities to grow in both directions! The total length of the hose is 27 cm (10.6”) and is made of smooth Silicone. Surprise yourself on how big you can get! This variant comes with a metal pistol grip pump with gauge and a quick release valve for your comfort.