TWC's quickly clamp a 2 x 4 to the top of your 1-1/8" form panels to straighten the wall and make an even joint between adjacent form panels. Top Waler Clamps elimate the damage from nailing or screwing 2 x 4 walers directly to form panels. The rugged TWC is formed from heavy-gauge, high-strength steel for years of service. With a rounded-corner wedge and chamfered corners on the body, it's also safer to use.