Includes low profile, premium urethane weight-mated sanding pad Optional vacuum conversion kits are available to easily convert non-vacuum tool to self-generated vacuum tool or central vacuum tool Grey lever identifies 3/16" (5 mm) dia. orbit, used for general sanding Drop-In Motor available (sold separately) to reduce costly down-time associated with routine maintenance More Power - True 12,000 RPM air motor Floating rotor utilizes five blades, producing more usable power (.