Porter Cable 390K 5" Low Profile Random Orbit Sander Porter Cable 390K Increased performance and durability are provided by the 3.5 Amp EnduraTech motor Material removal is 42 percent faster with the Electronic Load Control EnduraTech Motor has 71 percent fewer wear components for 5-10x longer motor life Spin-down time is reduced by 73 percent with the electronic motor brake resulting in increased productivity Gouging is virtually eliminated by the mechanical pad brake that reduces free-spin Low profile design reduces sander height by 31 percent for better finish and control Variable speed allows optimal removal rate on a variety of materials. Optimized ergonomics with rubber grip for control and comfort For optimal dust collection, the integral dust port accepts 1" and 1-1/2" vacuum hoses The 390K Includes: Sander Kit box Operating manual