Overview An integral extension of the band as an inner liner protects soft-surface hose (silicone and others) from damage caused by extrusion or shearing through the band slots. Liner clamps afford maximum protection to soft hoses while providing a true concentric seal. Standard 1/2? (12.7mm) band 5/16? (7.9mm) slotted hex head screw Per SAE standard J1508 Type ?F?