First, SPI Supplies starts with the very highest quality stainless steel for fashioning our spatulas, and then they are given a highly durable and robust PTFE (polytetrafluoroethylene) coating. Just remember that PTFE, in comparision to other polymers, is "soft" and therefore, just how long the coating will stay on the coated spatulas will be determined to some degree with your conditions of usage. SPI uses only pure PTFE homopolymer for the maximum chemical resistance and does not use in this application, co-polymers of PTFE.
Stainless Steel 230mm
Green PTFE coated everywhere