Poolmaster, Inc. 27402 Deluxe Air Relief Vinyl Liner Swimming Pool Vacuum For removing debris from fiberglass and vinyl liner pools Deluxe nylon bristles along perimeter and underside of vacuum Stainless-steel tension spring handle to help keep vacuum submerged and level with pool floor Two air relief valves to adjust suction strength and swivel-function hose adapter 15.5&#34; x 10&#34; (approximate size)