This tool is indispensable for finishing models, reaching even the most inaccessible places. Place the tip on the top of the handle, position the abrasive strip and fit on the handle socket. The socket grips the abrasive strip and holds the tip in the required position so that the tip can be used at any angle needed for the job. The flat tip can be used to smooth flat surfaces, while the curved one is useful for irregular shapes. Both tips can be angled to suit.