BRICKLAYING PROFILE CLAMP 350MM 350mm Bricklaying Profile Clamp is manufactured from carbon steel for increased durability.  Designed for setting up corner profiles resulting in an accurate guide for building walls straight and constructing external corners. 13.75in. / 350mm Bricklaying Profile Clamp Nail-On T-Bolt Screw / 80mm Thread Solid Steel / Zinc Plated