53532 Straight-line extension, rear exhaust model. Allows efficient work within long pipes, castings and more. Extension grinders allow operator to extend into work pieces and reach lengthy distances. Constructed of steel for maximum durability. Designed for minimal vibration. Extensions do not spin during tool use, so continuous tightening is not needed. Tools can also be fitted with optional buffing pads, collets and inserts, plus cone/plug wheels. (N.B. speed of tool must not exceed maximum operating speed of accessory.) Specifications: Power: 1.0hp. Motor: 18000rpm. Sound level: 84dB(A). Max air flow: 6SCFM (40LPM) Air pressure: 90PSIG (6.2Bar) Hose ID: 3/8" (10mm). Air inlet thread: 3/8" NPT. Tool thread: 3/8"-24 Weight: 3.1kg. Dimensions: (L)679mm x (H)48mm.