The Vevor seamless seam setter is designed for countertop, tile, stone, marble, and glass seam joining and leveling. It uses 5" nitrile rubber suction cups with up to 110 lbs of vertical suction for a secure hold during installation. Three fine-tuning knobs allow precise adjustment of seam spacing and height for accurate alignment. Its aluminum alloy construction is built for durability, while the vacuum rod latch design helps speed up setup and removal. The included accessories support cleaner surfaces and more stable suction during use.