L.E. Wilson has been making high-quality, precision reloading products since 1936. Since its introduction the Stainless Steel Micrometer Case Trimmer has been one of the most popular trimmers on the market because repeatable accuracy of the micrometer adjustable head to fine tune case lengths to .001" increments. Now reloaders can update their standard L.E. Wilson Case Trimmer to a micrometer version. All the reloader has to do is to take out the current case length adjustment block and replace it with this Stainless Steel Micrometer HeadNotes: This is a direct replacement part that reloaders can install to give their case trimmer micro adjustability