Features3 A permanent magnet motor delivers constant speed and power under loadVariable speed dial adjustable sanding speed, provides maximum control and a smooth finishUniversal vacuum hose adapter easily connects to all vacuum hoses sizes (1-1/4 in, 1-7/16 in, 1-1/2 in, 1-7/8 in, 1-15/16 in, 2-1/2 in)Electronic soft start controls start up speed, to eliminate swirls marksDual counter balance provides lower vibration during useUniversal hook and loop and PSA pad systems that accept both types of 5 in sanding discsPlastic dust canister with filter durable plastic carabiner, provides efficient dust collectionAnti-vibration design - provides ultimate comfort and control during use