OREGON SURESHARP 12 VOLT ELECTRIC CHAINSAW CHAIN SHARPENER *Use to correctly sharpen chainsaw chain *Runs on 12 volt auto type battery *Clip on battery connectors *Sharpens anu round - ground 1/4", .325", 3/8" or .404" pitch chain *Includes 3 sharpening stones: 5/32" (Ace no. 7192255), 3/16" and 7/32" (Ace no. 7192263) *Collet wrench *Portable