The STIHL 2 in 1 Filing Guide simplifies the process of sharpening your saw chain by completing two functions at once. The ease and accuracy of this unique accessory makes it the perfect system for maintenance of your STIHL chainsaw. The STIHL 2 in 1 Filing Guide gets more done with each stroke, so you can spend less time sharpening your saw chain and more time putting your chainsaw to work.Features:Specifications:UPC: 795711424237Part #: 56057504303Size: 3/8 PiccoUPC: 795711424244Part #: 56057504304Size: 0.325UPC: 88666119301Part #: 56057504306Size: 1/4"