Machine specifications MX-238 MXSV-238 Sharpening Length: 38S (97cm). Sharpening Profile: Two straight/square-edge wheels supplied as standard (other profiles and custom wheels available). Diamond Wheel Grit: #60 and #120 grit supplied standard (other grit sizes available). Material removal: Recommended rate not more than 0.0025UU (0.05-0.10mm). Blade Height Tolerance: +/- 0.006? (0.15mm) measured from end to end. Power Requirement: 115-120v AC 2Amp (220-230v AC 1Amp optional). Physical Size (Table top unit): Length: 48? (122 cm) Height: 46? (117 cm) Width: 27? (69 cm)