Cen-Tec’s 94511 is engineered to provide a complete electro-static dissipative dust collection hose solution connecting a variety of major brands of power tools to vacuums designed to insure a grounded shock free working environment. The 94511 provides three different and unique quick-change power tool connectors. These connectors are designed to provide 360 degree swivel connections at the tool to reduce tension coming from the hose that might inhibit free movement of the power tool over the working surface. The two bayonet tool adaptors have a built-in air relief which permits adjustment of the vacuum to prevent sealing to the work surface and insure sufficient air flow to the vacuum to protect motor life. The 3 metre conical hose has a smooth interior to improve vacuum performance. Tapering from 32mm at the tool end to maximize flexibility the hose uniformly tapers up as it extends to the vacuum to a 38mm inner dimeter. The conical shape increase airflow and is complimented by Centec’s proprietary hose end designed to maximise the inner diameter into the vacuum preventing clogs. The 94511 adaptors are designed for compatibility with all major brands of power tools including Makita, Dewalt, Festool. Fein, Kobalt, Porter Cable, Hitachi, Einhell, MacAllister, Milwaukee Electric and many private label brands of tools and dust collection shrouds. The 94511 is compatible with major tool brand vacuums and is also compatible with major brands of home shop vacuums with 58mm push fit tanks like Shop Vac, Ridgid, Craftsman, Vacmaster, Dustless, Fein, Cobalt, Dewalt, and Festool. Please do check your power tools and vacuum before purchase to ensure they are compatible with these adaptor sizes of Inner Diameter (ID) 25mm and 35mm and Outer Diameter (OD) 38mm and 48m. And also the tank fitting works with a 58mm push fit tank fitting. Power tools and vacuums pictured are not included.