The Porter Cable 390K Factory Reconditioned Low-Profile Random Orbit Sander has a 3.5 Amp EnduraTech Motor for increased performance and durability. The EnduraTech Motor Technology has 71% fewer wear components for 5-10x longer motor life and its electronic motor brake reduces spin-down time by 73% for increased productivity. An Electronic Load Control gives the 390K a 42% faster material removal. The mechanical pad brake reduces free-spin to virtually eliminate gouging while the low profile design reduces sander height by 31% for better control and finish. The 390K also features variable-speed, 7,000 - 12,000 OPM for optimal removal rate on a variety of materials. Optimized ergonomics with rubber grip provide comfort and control. An integral dust port accepts 1" and 1-1/2" vacuum hoses for optimal dust collection.