Use the Sonic rafter RW8941 perforated sanding finger pad with the preferred grit sanding sheet to sand the most detailed and small areas. It easily fits into corners and the tightest spaces. No more wrapping sand paper around your fingers, with the finger pad, simply attach it to the sonicrafter, pick the sanding sheet grit, and sand the most detailed and tight spaces with ease. For use on Rockwell Sonic rafter and Shop Series Sonictool models, RK5139K. RK5139K, RK5140K, SS5120.