Cobra Anchors Parawedge 491C Wedge Anchor, 1/4 in Dia, 2-1/4 in L, 449 lb, Carbon Steel, Zinc, 100/PK

The Parawedge™ anchor stud is cold formed and consists of a threaded section with standard coarse bolt threads at one end and a parabolic mandrel at the opposite end for a smoother expansion. It has a 360 deg one-piece clip that functions as a two-piece clip for more contact, a torque controlled expansion and can be installed into a bottomless hole.