The AccuTrans 75ml Extruder Gun is specifically sized for the 75ml AccuTrans silicone cartridges. A mixing tip is attached to the end of the AccuTrans cartridge prior to each use. After each use, the mixing tip must be replaced. The Spreader Tips may be attached to the Mixing Tips to extrude a wide ribbon of the Clear AccuTrans. A wooden spatula may also be used when necessary to spread the silicone in a thin layer.