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 sizes Dimensions:The first part outer diameter 25 mm / 0.98 inches, inner size 22 mm / 0.86 inches; second part outer diameter 30 mm / 1.18 inches, inner size 28 mm / 1.1 inches; third part outer diameter 34 mm / 1.33 inches, inner size 31 mm / 1.22 inches; the outer diameter of the fourth part is 42 mm / 1.65 inches, and the Inner size is 35 mm / 1.37 inches. Solves Your Problem:With our vacuum cleaner you can connect grinding machines, circular saws etc. to workshop vacuum cleaners, industrial vacuum cleaners and even household vacuum cleaners Fits with All s:Suitable as henry hoover hose vacuum cleaner adapter, Karcher adapter, Festo tool adapter, Makita adapter, Caramba, Workzone, Parkside, Rupes, Einhell, Nilfisk, Bosch etc DIY :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 pipe