PFERD's unique chain sharp tool sharpens the tooth and adjusts the height of the depth gauge in direct relation to tooth wear in one easy, hand-held operation. Both the round file and the flat file are replaceable. The Chainsharp by PFERD offers an easy solution to chain maintenance without the necessity of removing the chain from the saw. For safety, maintain a sharp chain at all times. Adjust the raker each time you sharpen the chain. Do both at once with CHAINSHARP! PFERD Chain Sharps are now offered in three sizes. The professional models are available with either a 7/32" or 3/16" diameter chain saw file and both come with a flat depth gauge file. Both are 8" long. These professional models can also be used with a 8" x 13/64" chain saw file. See below for the Low Profile Chain Sharp with 5/32" file. PFERD Chain Sharp pfchsh$17.95Size: 17062 3/1617049 7/32 PFERD 5/32" Low Profile Chain SharpThe low profile Chain Sharp has a 5/32" diameter sharpening file and a depth gauge file. 8" length. This model is not suited for other file diameters. 17050$17.95 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.