KOBLENZ 2.5 inch x 7 FT long EVA vacuum hose with CLICK-N-LOCK feature securely locks securely into place so you never have to worry about the hose disconnecting from the tank while operating your wet-dry-blow vacuum. Fits all KOBLENZ and KOBLENZ CONTRACTOR SERIES 12-16 gallon wet-dry-blow vacuums. Its unparalleled quality is certain to get the job done right the first time!