Double Double Lag Shield, 1/4" Dia, 1-3/8" L, Alloy Steel Plain, 50 PK

Expansion Anchor, Anchor Diameter 1/4 in, Overall Length 1 3/8 in, Screw Size 1/4 in, Thread Size 1/4 In.-20, Thread Depth 0.5 in, Thread Type Coarse, Material Zamac Alloy, Finish Plain, Drill Bit Size 1/2 in, Minimum Installation Depth 1 1/4 in, System of Measurement Inch, Expansion Anchor Type Double Expansion Anchor, Material Grade/Class Not Graded, Compatible Material Block, Brick, Concrete, Stone, Installation Method Machine Screw, Minimum Hole Depth 1 1/4 in