The Omega Technologies TSQ062 1/16” (.062) Tight Squeeze Replacement Hex Key is a full function hand tool for Hi-Lok® fastener installation. This amazing NEW tool gets into the tight places, allowing One-Handed Hi-Lok® installation. No more struggling in blind areas, around corners, inside cavities or trying to hold a hex key with one hand while working the ratchet with the other. The ”Tight Squeeze” works for Aluminum, Steel and smaller Titanium collars. It saves time and frustration while turning seemingly impossible jobs into routine work.