20 x Breitling Opener Dies ~ Perfect Finishing, Precision CNC Cutting, constructed of Aircraft-Grade Aluminum, designed to last a Lifetime ~ Designed in Japan ~ Fits Hand Wrench, Bergeon or Hototec Case Openers ( need Adaptor ) ~ Die Diameter from Flat side to Flat side (14 Edges) or Flat side to Corner edge (11, 13 & 15 Edges) as: #1 - 19.00 mm/ 11 Edges (marking BRE 11-019) #2 - 19.00 mm/ 13 Edges (marking BRE 13-019) #3 - 23.80 mm/ 13 Edges (marking BRE 13-023) #4 - 26.50 mm/ 13 Edges (marking BRE 13-026) #5 - 31.00 mm/ 14 Edges (marking BRE 14-031) #6 - 33.50 mm/ 14 Edges (marking BRE 14-033) #7 - 36.80 mm/ 14 Edges (marking BRE 14-036) #8 - 19.00 mm/ 15 Edges (marking BRE 15-019) #9 - 23.50 mm/ 15 Edges (marking BRE 15-023) #10 - 26.80 mm/ 15 Edges (marking BRE 15-026) #11 - 29.60 mm/ 15 Edges (marking BRE 15-029) #12 - 31.50 mm/ 15 Edges (marking BRE 15-031) #13 - 34.00 mm/ 15 Edges (marking BRE 15-034) #14 - 35.00 mm/ 15 Edges (marking BRE 15-035) #15 - 36.00 mm/ 15 Edges (marking BRE 15-036) #16 - 37.00 mm/ 15 Edges (marking BRE 15-037) #17 - 38.20 mm/ 15 Edges (marking BRE 15-038) #18 - 42.50 mm/ 15 Edges (marking BRE 15-042) #19 - 43.30 mm/ 15 Edges (marking BRE 15-043) #20 - 44.50 mm/ 15 Edges (marking BRE 15-044)