1/2" x 4-1/4" Zinc Plated Steel Concrete Wedge Stud Anchor Bolts WAS-132Type: Anchor Bolts
Drill Size: 1/2"
Type: Wedge Anchor
All mechanical bolts have a wedge arrangement at the end. Tightening the bolt results in a wedge being driven up against a sleeve. This jams the end of the bolt, and provides the strength.