Channel Toggle Anchor Toggle Anchor Type Toggle Bolt Anchor System of Measurement Inch Anchor Diameter 1/2 in Thread Size 1/4 In.-20 Overall Length 6 in Screw Size 1/4 in Screw Length 2 1/2 in Thread Length 2 1/4 in Drive Type Combination Slotted/Phillips Head Type Not Applicable Head Diameter 0.44 in Head Height 0.19 in Usable Length 2 in Wing Span 1.5 in Washer Outside Diameter Not Applicable Material Steel Finish Zinc Plated Color Blue/White Drill Bit Size 1/2 in