The BlueSpot Bricklaying Profile Clamp is manufactured from carbon steel for increased durability. Ideal for securing objects together to prevent movement or separation, resulting in an accurate guide to building the wall straight and constructing the corner of a brick surface. Complete with a T-bolt thumbscrew. This BlueSpot Tools Bricklaying Profile Clamp has the following specification Size 200mm (8in) Max. Opening 180mm Min. Opening 120mm Long Thread Length 80mm