Carvin SERIE'S FEATURESRing-Lok access to filter element for "tool-free" servicing.Built-in tooth on Ring-Lok allows you to easily disengage lid.Automatic Air Bleed assures 100% filtration and longer filter cycles.Safety tab lock assures proper installation and safe operation.Patented sediment catcher prevents debris from falling into the tank when the element is removed.Coreless elements allow easy cleaning from inside-out with a garden hose.One-piece body with 2" (51mm)