FOUR SHARPENING ANGLES: The Magnetic Angle Block has four different sharpening angles (15°, 17°,20°, 25°) to sharpen a wide variety of kitchen knives from Chef, Santoku, carving, utility, paring, steak, fillet, chopper, cleaver, and boning. THREE SHARPENING ABRASIVES: The three abrasives are a coarse 320-grit diamond, a fine 600-grit diamond, and fine ceramic, which will restore your knives to a razor-sharp edge. COMPACT SIZE: It is big enough to sharpen all kitchen knives, such as Chef, Santoku, carving, utility, scissors, and more, yet small enough to store in a kitchen drawer. 3-YEAR WARRANTY: All Work Sharp sharpeners come with a comprehensive 3-year warranty. Each knife & tool sharpener is meticulously designed and quality-checked at our Oregon facility. We proudly stand behind our products. DESIGNED, ENGINEERED, & CALIBRATED IN OREGON: We design, engineer, and calibrate our sharpening machines all under one roof in Ashland, Oregon & ensure our products are sourced from the highest caliber manufacturers, both in the USA and globally. The Work Sharp Rolling Knife Sharpener is a handheld sharpener that uses a Magnetic Angle Block and Rotating Abrasives to quickly and easily sharpen your knives. The Magnetic Angle Block has four different sharpening angles (15°, 17°,20°, 25°) to sharpen a wide variety of kitchen knives such as Chef, Santoku, carving, utility, paring, steak, fillet, chopper, cleaver, and boning knives to the optimum angle. The three abrasives are a coarse 320 grit diamond, fine 600 grit diamond, and fine ceramic that will restore your knives back to a razor-sharp edge. Place your knife against the Magnetic Angle Block on one of the pre-set angles. Starting with the Coarse Abrasive, roll the abrasive along the cutting edge. It’s that easy. Compact size easily fits into a kitchen drawer. The Work Sharp Rolling Knife Sharpener makes for a great gift for anyone and has a 3 year warranty. Never struggle with a dull knife again. Sharpen with Work Sharp.