Countertop Seam Setter: Professional 90 degree countertop seam setter, right angle clamping, used for seam joining and leveling. Easy to Use: The suction cup is tightened when the suction cup handles are pressed together, and the suction cup is loosened when the suction cup handles are at a 90° angle. Easy to open and close the seams. Material: The 90 degree stone seam setter is made of stainless steel and plastic material, not easy to deform, sturdy and to use. Easy to Adjust: Stone setter installation tool with suction cups, strong adsorption force, stable and not easy to fall off. With 2 adjustable knobs for precise leveling, easy to operate. Wide Applications: The right angle seam setter is suitable for various materials, like marble, stone, floor tiles, ceramic tiles, s, etc.