Perma-grip® is the largest selling medium duty concrete anchor in some parts of the United States. Most of the sales have been to STAFDA distributors. The largest STAFDA distributors, such as Carlson Systems, Dynamic Fasteners, Fastenal, Fasteners, Inc., and White Cap Construction Supply, sell the Perma-grip® anchor.
Robertson Screw, based in Milton, Ontario, has been a leader in innovative fastener solutions since 1908, providing high-quality multi-purpose screws for various applications including construction, woodworking, and HVAC.
s Cobra is one of the largest direct manufacturers of anchors, picture hooks, plant hangers and concrete screws in North America. With two state-of- the-art plants, located in MontrealCanada and in Temple,Pennsylvania,with 3 distributions centers.