Pocket-sized tool fits all deck plate caps; slotted, raised lug, spaced hole & star type caps. Features common hex sizes: 5/16'' (8mm), 7/16'' (11mm). Built-in shackle key, flat screwdriver & bottle opener. Wide, flat edge gives good hand leverage when using shackle key. Constructed of specially hardened stainless steel. Will never corrode or break.