ABN Adjustable Piston Installer Pliers &ndash; Piston Ring Spreader &ndash; Expander Plier Tool for Installation 3/64&rdquo; to 1/4" Inch EASY PISTON RING INSTALLATION: The ABN Adjustable Piston Installer Pliers  Piston Ring Spreader  Expander Plier Tool for Installation 3/64 to 1/4" Inch allows for safe and quick installation of piston rings by simple ring expansion BUILT TO LAST: Constructed from all steel with tapered jaws for a quick and easy installation process GRIP COMFORTABLY: Vinyl-coated handles with nonslip rubber grips that offer safe and comfortable operation for less user fatigue and more productivity WORKS ON VARIOUS PISTONS: Designed for use on the most common piston and ring diameters ranging in thickness from 3/64-inch to 1/4-inch (1.2mm to 6.4mm) EASY TO USE: These pliers expand or spread rings to insert into the groove and install on a piston; Not intended for compressing piston rings