Toggle Bolt Anchor, Toggle Anchor Type Toggle Bolt Anchor, System of Measurement Inch, Anchor Diameter 11/16 in, Thread Size 1/4 In.-20, Overall Length 3 in, Screw Size 1/4 in, Screw Length 3 in, Thread Length 2 7/8 in, Drive Type Combination Slotted/Phillips, Head Type Round, Head Diameter 0.44 in, Head Height 0.19 in, Usable Length 1 3/8 in, Wing Span 2 in, Washer Outside Diameter Not Applicable, Material Steel, Finish Zinc Plated, Color Blue/White, Drill Bit Size 11/16 in