Features: 1. It is supported by lightweight and durable material, which is not easy to wear after repeated use, and is more sturdy and durable, and is more suitable for heavy countertops. 2. The height knob is convenient to adjust: the height on both sides can be adjusted as needed, and the height between the tiles can be monitored at any time. It is easier and more precise to achieve the best joint. 3. Adjustable stone seam setter: This sucker stone seam locator is used to connect or open the workpiece and the seam in the assembly work, pull two planes or seams together, seamless splicing, and simple operation. 4. Powerful suction cup: The vacuum rubber suction cup is made of high-quality rubber, which has strong adsorption force and durability, and has a longer service life. 5. Applicable occasions: suitable for marble and granite, floor mirrors, glass, plastics, or any occasion where flat and non-porous surfaces need to be drawn together. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Specification: Aluminum alloy countertop tensioner Material: aluminum alloy + rubber Size: total length 390mm, suction cup diameter: about 120mm Suction weight: 50KG / 110.2LB / 110.2OZ Rubber thickness: 7MM Height adjustment length: 120mm Spacing adjustment length: 20mm Iron countertop tensioner Material: iron + rubber Size: total length 425mm, suction cup diameter: about 145mm Rubber thickness: 8MM Height adjustment length: 115mm Spacing adjustment length: 20mm includes: 1 x Stone Seam Setter