2Packs 6 inch Seamless Seam Setter With Vacuum Suction Cups For Seam Joining Leveling Solid Countertop Installation Tool This seam setter Relatively good holding power, Suction is excellent.seams for professional countertop installers（seams in quartz counter tops）This Seamless seam stone setter work great for any solid surface counter top seamsJoins, levels, and flattens stone to deliver superior seams, every timeSuction Cup Diameter: 6 "(152 mm)Vertical Maximum Suction: 264lb (120kg) Easy to use adjustable knob for seam joining or opening, two fine-tuned adjustable knobs for precise leveling. Free accessories like protective gloves, L shape internal hexagonal wrench Precise and simple Two adjust the height of countertop for precise leveling, and one adjusts the space between two countertop for seam joining or opening. Knobs have vinyl-capped and non-spinning feet to prevent scratches. How to use: Place the fixed (left) suction cup on the left slab. Place the movable (right) suction cup on the right slab.Pump the plunger until the suction cup attaches completely. When the red line is hidden, vacuum is sufficient for lifting.To join the seam, turn the side knob counter-clockwise until you are satisfied with a seamless appearance.To level the slabs, make sure one of the blue head under the top knob is on the higher side of the seam and turn the top knob clockwise until the slabs are leveled. Usually you only need to use one top knob to level. Use two when there are any expanding needs.Lift the rubber tab on the edge of the suction cup to release the suction after seam has been completed. Strong suction cup The suction cups provide continuous seal for strong, reliable hold, feels safe and secure when attached to countertop without risk loosing suctionSuction Cup Diameter: 6 "(152 mm)Vertical Maximum Suction: 264lb (120kg) Specification： Size: 450*155*120mm Total length: 45cm Suction disc diameter: 6inch How to use 6INCH Seam Setter 1: Place the fixed (left) suction cup on the left slab. Place the movable (right) suction cup on the right slab. 2: Pump the plunger until the suction cup attaches completely. 3: To join the seam, turn the side knob counter clockwise until you are satisfied with a seamless appearance. 4: To level the slabs, make sure one of the blue head under the top knob is on the higher side of the seam and turn the top knob clockwise until the slabs are leveled. Usually you only need to use one top knob to level. Use two when there are any expanding needs. 5: Lift the rubber tab on the edge of the suction cup to release the suction after seam has been completed. Wide Application：This seamless seam setter is suitable for precise joining and leveling marble, granite, floor, mirror, glass, plastic, and other materials. It is a necessary tool for professional stone manufacturers and granite countertop installers. EASY OPERATION：Our seam setter is easy and convenient to operate. It keeps edges clean, free of chips, and straight. One adjustable knot is used for joining or opening, and two adjustable knots for precise leveling. The adjustable rod’s maximum height is 20mm, and the adjustable clearance range is 0-40 mm. Strong Suction Force：The two suction cups made of rubber has a strong and stable suction force with no air leakage.Premium Quality