You can attach strong rubber pads to the bricks. The rubber pad can hold the surfaces of the bricks without maintaining tension during installation Special feature is that the precise wire grooves are located in the outer jaw and the brick wire can be easily guided around the inner and outer corners Inside the brick liner there are spring clamps that hold the tiles firmly and provide bricklayers a quick way to draw precise tile lines Due to the precise craftsmanship of many experts, this hand tool has strict performance requirements This practical levelling device can maintain its high performance over a long period of time, Manufacturer: OSNIYAW