Easy Out Tool For Use With Fittings with Hex Size 5/16 in 3/8 in Connection 1/4-28 Features Handy Dual Purpose Tool for Removing Worn and Broken Grease Fittings as Well as Retapping Holes for Installing New Grease Fittings. Works with Straight and Angled Fittings Includes Hardened Tap for Retapping 1/4-28 Holes Screw Extractor for Removing Worn and Broken Grease Fittings