"DESCRIPTION Features: Quickly and accurately sharpen most chainsaw chains Sharpening stones to suit all popular chainsaw chains 1 x Gauge for accurate chainsaw chain sharpening Technical Data: 12V DC 55W Speed 25, 000 RPM Direct Drive Inclusions: 1 x 12 Volt chainsaw chain sharpener 1 x Gauge for accurate chainsaw chain sharpening 1 x 5/32"" (4.0 mm) grinding stone, suitable for chainsaws fitted with 1/4"" pitch or 3/8"" low profile chain 1 x 3/16"" (4.8 mm) grinding stone suitable for chainsaws fitted with .325"" pitch chain 1 x 7/32"" (5.5 mm) grinding stone suitable for chainsaws fitted with 3/8"" or .404 pitch chain 1 x Multi Tool 3 Sharpening stone collets Country Of Origin: China REVIEWS"