Material Made of high quality soft PVC with precise fit, durability and long service life. According to your own requirements, you can cut and use four specifications and sizesSolves Your ProblemWith our vacuum cleaner you can connect grinding machines, circular saws etc. to workshop vacuum cleaners, industrial vacuum cleaners and even household vacuum cleanersApplicable model 25mm/30mm/34mm/42mm, not only suitable for vacuum cleaners, but also suitable for other machines, the same size can be usedDIY Whether you are a do-it-yourselfer or a professional, this adapter must not be missing, it can be easily cut to size and serves as a reduction for the suction hose / vacuum cleaner pipeColour: BlackSize: as shownPackage content: 4pcs vacuum cleaner four-layer adapterWarm prompt:1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering.2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding3. Only the above package contents, excluding other products.