The Dremel MM494BU pipe and 2X4 blade is made for cutting pipe and thick materials such as 2X4 studs. With an extra-wide cutting edge， the MM494BU adds control and convenience because users can now easily cut PVC， conduit and copper pipe without the blade slipping off of the work-piece. Cuts through a 2X4 can now be done in one pass as well. The blade's Bi-Metal construction optimizes the MM494BU for metal cutting， so you'll experience no more destroyed teeth if you hit a nail while cutting. The Dual Interface allows its use with the most common oscillating tools in the market without the need of an adapter