PRECISE, CONSISTENT: Sharpening Guides can be set to 20 or 25° or removed to sharpen freehand. TRI-BRASIVE BENCHSTONE: Angle Guided, 3-sided abrasive sharpening system. Quickly index between coarse and fine diamond and fine ceramic stone. Medium (400) Grit Diamond and Fine (800) Grit Diamond Plates quickly restore a sharp edge, while the Fine Grit Ceramic Stone creates an incredibly keen edge on any knife. PIVOT-RESPONSE : Abrasive follows the curve of the blade to maintain contact and create the best results. Feature can be locked out to provide a rigid sharpening surface for a wide range of knife & tool sharpening applications. Additional angle guides for 15 and 17 degrees are available. Replacement abrasives are available to service your tool for long life. 3-YEAR WARRANTY - protects every Work Sharp tool against defects due to workmanship or design PROUD TO BE AN AMERICAN COMPANY - Work Sharp is a 4th-generation family owned company in Ashland, Oregon. For over 40 years we have been engineering industry-leading sharpening tools here in the USA.