Vacuum gun for grouting stone and slabs attachments 660mm

Do what you promise. The workmanship is quite high quality (strong, thick plastic), the piston has a rubber that seals well, the piston piston holder is metal, the handle is plastic, but strong and well assembled (metal nets and two screws), so it is fixed. The fittings are four made of quality hard plastic with incised internal thread.The vacuum gun works well with e.g. electrical work - the application of rough plaster in the installation of sockets is much more accurate and easy than in manual plastering. The easiest way to fill the piston is to unscrew the front grout, pull the piston to its extreme position, and then pour the grout into the sleeve with a suitable spatula or pot. Then just screw on the grout and push the piston lever as if “filling” donuts with jam. Cleaning the gun is easy under running water because it is completely disassembled.Nice product. What about its longevity, however, is a question because I haven’t used it long enough yet. There is probably a problem with the availability of spare parts - e.g. rubber piston if it is damaged over time or if any of the plastic threads are damaged…