Features ALUMINUM ALLOY MATERIAL: Made of premium aluminum alloy material, the setter is strong and sturdy, while relatively light in weight, easy to use. RUBBER SUCTION CUPS: Two manual rubber suction cups are used, with strong and stable suction force and no air leakage. The hand pump vacuum suction cup easily fixes the tabletop, with a large diameter of 150mm and a maximum vertical suction force of 300k ADJUSTABLE HEIGHT: The seam setter comes with three adjustable buttons for fine adjustment. Adjust the height of two countertops for accurate leveling, and adjust the space between the two countertops for seams or openings. STABLE PERFORMANCE: These seamless seam setter have relatively good retention and excellent suction. For professional countertop installers. MAIN APPLICATION: Before the ceramic tile adhesive and glass adhesive are fully dried, the seam setter prevents displacement and rebound at the joint. Specification:Item Type: Seamless Seam Setter Material: Aluminum Alloy, Rubber Application: Before the ceramic tile adhesive and glass adhesive are fully dried, they prevent displacement and rebound at the joint Suction Cup Diameter: Approx. 150mm / 5.91in Maximum Vertical Suction: Approx. 300kg / 661.4 lb Package List:1 x Seamless Seam Setter Package List 1 x Seamless Seam Setter