LEE'S - Squeeze-Bulb Siphon Starter - 1 UnitDESCRIPTION The Squeeze Bulb Siphon Starter is so efficient, that siphoning is easy no matter what the level of water in the aquarium. Fits 1 2" I. D. hose and Lee's Ultra Gravel Vacs #11544, #11545, #11555, #11556, #11558 and #11560. With the included adapters, fits 3 8" I. D. hose and Lee's Ultra Gravel Vacs #11551, #11552, #11553 and #11554. DETAILS Package Description: 1 Unit Serving Size: .. Number of Servings: .. FACTS Contents: One Squeeze Bulb