This hose kit accessory is suitable for the Billy Goat KV/TKV range of vacuum. 4” x 7’ is great for cleaning hard-to-reach areas. Greatly improves vacuum versatility. This on-board hose kit accessory is suitable for all Billy Goat KV models and will provide the flexibility needed to get to those hard to reach places. The hose Diameter is 4 inches x 7 feet Long.