MPQ1790 Features: * Square washer * Quality square flat steel washers * 0.81"" Center to edge * Bolt Size: 0.5"" * Hole Size: 0.56"" * Box quantity: 100 Color/Finish: * Square, flat steel washers have Zinc electroplate finish 1-0.63"" wide x 0.25"" thick Warranty: * 1 Year warranty