Winged Anchor System of Measurement Inch Anchor Diameter 1 1/4 in Overall Length 4 in Thread Size 1/4 In.-20 Drive Type Phillips Head Type Flat Nut Width Not Applicable Washer Outside Diameter Not Applicable Material Stainless Steel Material Grade/Class ABS Machine Grade Finish Plain Drill Bit Size 1 1/4 in Compatible Material Drywall Plaster Minimum Installation Torque Not Applicable Maximum Installation Torque Not Applicable Minimum Installation Depth Not Applicable