Toggle Bolt Anchor, Toggle Anchor Type Toggle Bolt Anchor, System of Measurement Inch, Anchor Diameter 1 in, Thread Size 3/8 In.-16, Overall Length 6 in, Screw Size 3/8 in, Screw Length 6 in, Thread Length 5 7/8 in, Drive Type Combination Slotted/Phillips, Head Type Round, Head Diameter 0.63 in, Head Height 0.25 in, Usable Length 4 3/8 in, Wing Span 2.875 in, Washer Outside Diameter Not Applicable, Material Steel, Finish Zinc Plated, Color Blue/White, Drill Bit Size 1 in