It is the new tool for builders and bricklayers, which provides the ultimate and simple way to manage a line of bricks. It provides a quick, easy and convenient way for bricklayers to run precise brick lines and allows you to work where other options like corner blocks and line pins can't. the surface of the brick meaning there is no need to maintain perfect tension when setting the line. Includes precise line slots in the outer jaw which means the lines of bricks can easily be run into internal and external corners. Made from a tough PPR material, it is durable with the strength required to withstand the conditions of a construction site. The quick and easy way to run a line. Unique Brick Clamps provide a quick, easy and convenient way for layers of brick to run bricks lines and work where alternative options can't. Spring-loaded jaws provide a heavy-duty clamping solution that prevents falling corner blocks for time-saving and hassle-free work. Simply attach the clamps, run the line and lay your course. Specification: Item Type: Brick Liner Runner Material: PPR Engineering Plastics Opening size: 9-12 cm (3.5-4.7 inch) Qty: 1 pair Color: Red Package included: 1 pair of brick liner