DeWALT 1/4" X 4" Ultracon+ Hex Head Screw Anchor, Carbon Steel, Blue PACK:100 Pk The patented reverse thread design

The patented reverse thread design allows the anchor to cut into concrete or masonry while requiring less torque than conventional concrete screws

and the T40 6-Lobe drive system delivers high torque transfer with reduced cam-out during installation

and reduces waste - unlike competing ironworkers that use less efficient pivot mechanisms

which is compatible with the T20 6-Lobe recess on these fasteners

DeWALT 1/4" X 4" Ultracon+ Hex Head Screw Anchor, Carbon Steel, Blue PACK:100 Pk The patented reverse thread designDeWALT's Ultracon+ Concrete Screw Anchors with Hex Washer Head & Blue Stalgard Coating are designed for light to medium duty applications in concrete, masonry block, brick, and wood base materials. UltraCon+ concrete screw anchors are fast and easy to install, providing a neat, finished appearance. The UltraCon+ concrete screw anchor is engineered with matched tolerance drill bits and installation tools designed to meet the needs of the user and also