Powerful Suction Cups: The vacuum suction cup is made of high-quality rubber, and the thickened rubber is approximately 7.5-8 mm. Strong, with excellent adsorption force and a longer service life. High Quality: This adjustable vacuum suction cup is made of aluminum alloy and iron components, sturdy and durable, and suitable for heavy-duty drilling. Easy to Use: The adjustable glass suction cups are professionally adjustable, allowing you to set the appropriate distance by adjusting the rod to meet your installation requirements. Instructions for Use: This professional countertop installation tool is used to pull and align pieces and seams to connect or open during assembly work, to pull two planes or seams together, and to seamlessly splice tile installations. Applicable occasions: The stone joining tool is suitable for granite, stone, marble, slab, floor mirrors, glass, plastic or any situation where flat, non-porous surfaces need to be pulled together.