Countertop Alignment Clamps, Adjustable Seam Setter With Vacuum Cups, Seams Joiner For Leveling, Granite Glass, Yellow Strong Adsorption and Stability This jointing clamp uses dual vacuum suction cups to deliver strong adhesion on smooth surfaces such as granite, marble, and glass. It securely fixes the stone during installation, prevents slippage and damage, and provides stable support. Precise Adjustment and Seamless Jointing A fineadjustment knob lets you precisely set the gap width and surface flatness, ensuring a seamless joint every time and improving work efficiency. Durable AllMetal Design Made of strength aluminum alloy with corrosionresistant knobs, it is built for longterm, heavyduty use. It offers professionalgrade durability and is particularly suitable for largescale and heavyduty stone installations. Easy Operation and Quick Installation The easytouse vacuum release mechanism enables quick attachment and removal, saving installation time while maintaining strong adhesion and boosting work efficiency. Applications Installing large granite or marble countertops and slabs where stable restraint and accurate joints are required. Creating seamless joints when installing marble surfaces for kitchen islands, countertops, backsplashes, or vanity tops. Securing stone panels or cladding on walls or displays, including glass surfaces, during fabrication or onsite assembly.