This is a small range of extremely useful and effective adaptors. Connecting extraction hoses to power tools and other small machines is never an exact science especially when it involves different brands. No two manufacturers seem to use the same diameter or bore.
Our Britsh made tapered stepped hose reducer solves the problem. There are three sizes to solve many connection mismatches. More versatile than hard plastic reducers, these reducers are a thick walled flexible rubber composite. The thick wall prevents the vacuum pressure from collapsing the reducer. You can use them as they are or cut them to length with a sharp utility knife.
Each reducer is 165mm long, each tapers externally and has seven internal steps giving various diameters.
Small reducer: internal diameter 22mm, external diameter 30mm to internal 38mm, external 45mm.
Medium reducer: internal diameter 38mm, external diameter 45mm to internal 55mm, external 60mm.
Large reducer: internal diameter 55mm, external diameter 60mm to internal 70mm, external 77mm.