Features & Details 【MULTI-PURPOSE SEAM SETTER】 - Three-in-one tool: this seamless seam setter can be used as a seam joiner, seam leveler, and back splash holder. It employs an air pump to exhaust air, putting two flat surfaces or seams together. 【POWERFUL SUCTION CUPS】 - Suction Cup Dia.: 8" / 20.3 cm. This seam setter has two manual vacuum cups that can easily and firmly align two planes into a seamless worktable. The high-quality rubber suction cup won't easy to leak air. And its large diameter and 573 lbs / 260 kg maximum vertical suction force can join the panels stably and seamlessly. 【DURABLE & ADJUSTABLE】 - The stainless steel rod is highly intensive and durable, and the anodized aluminum knobs are not easy to break and slide. Top knobs are designed to adjust the leveling in a precise high or low level, max-height: 0.8 in / 20 mm. Side knobs are used for joining or opening with a clearance range of 0-1.6 in / 0-40 mm. 【EFFORTLESS OPERATION】 - Our seam setter is effortless to operate. You need to put the suction cup on the worktable and pump the plunger until the suction cup attaches completely and ready for lifting. Then adjust knobs to achieve a seamless and leveled surface. The suction cup is easy to disassemble and can be used alone. 【WIDE RANGE APPLICATION】- This seamless seam setter is suitable for precise joining and leveling flat marble, granite, floor, mirror, glass, plastic, quartz, laminate, and other materials. It is a necessary tool for professional stone manufacturers and granite countertop installers.