SPECIFICATIONS: Item Cutting dies (sizes available in 8, 10, 12, 12.7 (1/2"), 13, 14, 15, 16, 17, 18, 19, 20, 24mm diameter), please choose from option bar. Cutting Dies Made of hardening tool steel with Cr plating (for electrode discs of CR20xx series coin cell cases), 8mm 10mm 12mm 12.7mm (1/2") 13mm 14mm 15mm 16mm 17mm 18mm 19mm (also for CR2325 negative side cases) 20mm (for electrode discs of CR2450 cell cases, CR2325 positive side cases, and separator discs of CR20xx series coin cell cases) 24mm Warranty One year limited manufacturer warranty with lifetime support (*Rusted and damaged parts due to improper storage condition or maintenance are not covered by warranty)