Thompson offers twelve colors. Our office uses a Color Code ring system. A Thompson offers the most heavyset, durable ring on the market. Many offices have used the product for years without noticing any discoloration . A Thompson Precision Synthetic Stones eliminate the need to lubricate with oil.
Oil is a contaminate and limits sharpening to pre-sterilization.
TP Stones can be used dry or with water. They are available in four popular sizes and are color coded for easy identification. This site created by Pyron Technologies, Inc.