These are knifemaking Brass handle spacers. They are new water jet cut and just need a fitting and buffing. Made in Spokane WA, USA. Overall exterior size: 0.040" thick x 15/16" wide x 1 5/8" tall. Approximate cutout in center: 0.25" X 0.75". Made to fit 1/4" x 3/4" blade at largest, but also fits smaller blades such as 1/8" x 1/2" since it is a spacer and is adjustable.