Product Description Reviews 6pc DIAMOND CHAINSAW SHARPENER BITS 5/32″ x 6pcs These awesome bits are designed to sharpen both standard and tungsten chainsaw chains with ease and have a host of benefits compared to traditional stone type bits. Suits: cordless and 12 volt chainsaw sharpeners, cordless drills, rotary tools and more Stone size: 5/32” (4.0mm) -Can be used on .3/8″Chainsaw chains Useable diamond sharpening material length: 20mm Shaft diameter: 3.0mm Benefits: Faster sharpening Non glazing diamond coating Full metal construction maintains constant shape and diameter Sharpens tungsten and standard chain Lasts up to 5 times longer than traditional stones NOTE: these diamond sharpeners feature a straight shaft and are not suitable for sharpeners that have a threaded shaft. Copyright Tool King all rights reserved 1 Review 5 super easy ,super sharp Posted by rob on 15th Jan 2019 easy to use ,quicker then a file . nice sharp chain that now cuts like butter .