One pair flat metal Underwires sized 38B. Will also fit in 36C/34D/32E Every bra and pattern manufacturer has variations in their sizing. Please check
Metal Bra Underwire Pair - Size 38 - Underwire - Boning - Notions
Organic Cotton Bras I Natural Fibre Bras I Non Toxic Bras – The
Full-Coverage Underwire Bra
Underwire Channeling: Nude - By the Yard from CorsetMakingSupplies.com
Bra 38b
Vertical Underwire Metal Bra Underwires - Bra-Makers Supply
WO2017096075A1 - Bra engineering - Google Patents
38 C Bra
32e Bra
38 D Bra
Bra Underwire
2pk Lace & Mesh Full Cup Bras A-E