Seamless Seam Setter, 2 Packs, Granite Seam Setter with 6 in Vacuum Suction Cups & Tool Bag, Seam Joiner for Seam Joining & Leveling, Countertop Installation Tool for Tile Stone Marble SlabProduct Features Powerful Suction This seamless seam setter features a 6 inch nitrile rubber suction cup that generates up to 530 lbs of vertical suction, ensuring a firm and stable hold. Ideal for creating precise seams on materials like marble, floor tiles, ceramic tiles, and glass. Precise Adjustments Equipped with three fine tune knobs, including height and seam spacing adjustments, the granite seam setter allows easy modification of seam width