Fletcher MultiMaster fires the uniquely shaped bendable MultiPoints. They are roughly rectangular in shape, with two barbs and a 4.5mm round hole. The two barbs hold it firmly into the wood and the MultiPoint is bendable allowing the frame back to be removed and re-fitted. The special feature of the MultiPoint is that it can be used to join two frames together when assembling shadow boxes. Fire it into the side of the lower frame and then put a screw through it into the upper frame. This holds the two frames together, yet allows them to be easily dismantled. 6 month warranty.