2 replacement abrasive plates for the Work Sharp Professional Precision Adjust Knife Sharpener Includes: 320 grit & 400 grit Diamond Abrasive Plates Size 1" x 6" and does not fit other Work Sharp Products. Course Grit Replacement Kit for ONLY the Work Sharp Professional Precision Adjust PROUD TO BE AN AMERICAN COMPANY - Work Sharp is a 4th-generation family-owned company in Ashland, Oregon. For over 50 years we have been engineering industry-leading sharpening tools here in the USA. Work Sharp Professional Precision Adjust Coarse Diamond Abrasive Kit includes: (1) 320 grit diamond plate & (1) 400 grit diamond plate and is intended for use on the Work Sharp Professional Precision Adjust Knife Sharpener.