Use the Sonic rafter RW8938 perforated sanding pad with the preferred grit sanding sheet to sand in small areas and corners. This sanding pad attachment is the perfect companion to the Sonic rafter as its compact triangular shape is ideal for sanding in hard to reach areas. Great for detail sanding jobs where precision is important. For use on Rockwell Sonic rafter and Shop Series Sonictool models, RK5139K. RK5139K, RK5140K, SS5120.