This 90-degree stone joint machine is designed for machining two beveled workpieces at a 90-degree angle, ideal for a variety of materials such as quartz, natural stone, or other similar stones. It features a maximum assembly angle of 90 degrees and includes CE-standard vacuum suction cups with two streamlines for enhanced adsorption on stone, ensuring long-lasting quality. Each suction cup has a diameter of 150mm. The machine operates by pressing the air pump, with a red indicator line for guidance during use. Constructed with a stainless steel rod that maintains good shape without deformation, it also has aluminum balance slide rails and clamping slide rails for easy adjustment of flatness and tightness. Specifications include commercial manufacturing usage, dimensions of 450*450*170mm, a net weight of 4.60 kg, and a cup diameter of 150mm. The product is listed as a stone transport clamp with a maximum angle joint of 90 degrees. The packing list includes one piece of the 90-degree stone seamless jointer.