Power tool adaptor Kit contains 4 x bayonets; 4 x air relief; 19-32mm; 25-35mm; 32-42mm; and 38-48mm adaptors; 32mm threaded hose connector; and a clip ring The hose thread is compatible with 32mm hoses for vacuums such as Numatic (Henry), Nilfisk, Titan, Sealey, Vax, and any various ShopVac brand or 32mm hose wet and dry vacuums Comes with quick click system for connecting to the exhaust port of hand held and stationary power tools. Swivel neck permits 360 degree movement at the adaptor and hose connection Adaptor sizes are 19, 25, 32 and 38mm Internal Diameters (ID) female friction and 32, 35, 42 and 48mm Outer Diameter (OD) male friction Air relief allows the user to adjust the suction of the vacuum to the power tool. Avoids power tools from sticking to surfaces with the use of a vacuum, Weight: 0.7054792384 pounds, Manufacturer: Malton Plastics (UK) Ltd.