The seam setter is a convenient tool. It is designed to make two work-pieces to be a 90 degree angle for various material like Granite, Stone, Marble or other similar stone material and it is widely used for kitchen island and bar counter. In 1 tool, seam joiner and seam leveler for professional installation. Two 8-inch hand pump vacuum suction cups for tight holding and Two adjustable knobs for precise leveling . Made of long-lasting stainless steel components and aluminum tightening handles for heavy-duty stone countertop. It is easy to Use, just press air pump to make the stone seam setter working. Aluminum balancing and tightening slider for easy adjusting the flatness and tightness. Seams can be easily opened and closed by using of smooth-turning knurled roller., Manufacturer: SOYWIM