For compounding, buffing and polishing in small, hard-to-get-at places. Contains 6 pieces. -Micro compounding and buffing pad. 3.5 inch diameter. Wool, curved edge with Velcro backing. - Single-ply micro polishing pad. 3.5 inch diameter. Wool and synthetic fibers, curved edge with Velcro backing. - Micro buffing pad with loop backing. 3.5 inch diameter. Yellow foam pad with Velcro backing. -Micro polish/finish pad with loop backing. 3.5 inch diameter. Black foam pad with Velcro backing. - Micro hook backing plate with 5/8 "- 11 thread. 3 inch diameter. Velcro hook backing 5/8" -11 thread. - DA pneumatic adapter 5/8" No. 11 thread to 5/16" No. 24 thread.