Velco Hole Saw 105mm 

With the Velco hole saw, you can easily install the Ø 100 mm Velco fresh air valve. This bimetal hole saw, designed to be attached to a drill, is suitable for installing products like Velco VTR-100 and Velco VLR-100 supply air valves.

The hole saw package includes a 105 mm hole saw and a compatible arbor.