Function: the brick line runner has a spring-loaded clip that can firmly clamp the brick, which provides bricklayers with a quick way to run accurate brick lines, high efficiency and save your time. Easy to Use: the brick line runner features precise line slots in the external jaw, brick lines can easily be run around both internal and external corners. The rubber pad of this brick clamps liner can make the brick liner tightly grasp the surface of the brick.. Wide Applications: the wire drawer is can be used on most smooth or raked bricks and blocks, which can build uniform and straight brick line. Suitable for brickworking, wall laying, woodworking, electronics enthusiasts etc. Durable Material: the brick liner clamps is made of quality PPR plastic and metal spring, it is durable with the strength required to withstand the conditions of a building site. Package Includes: one package includes 2 pieces brick line runner, 16.5cm long, 6.5cm wide, and the top brick clip is 6.5cm long, suitable for 95-125mm smooth or inclined bricks.