https://www.audiophonics.fr/en/cables-xlr-jack/ifi-audio-balanced-cable-male-jack-44mm-to-male-2x-xlr-ofhc-copper-silver-1m-p-15216.html
IFI AUDIO Balanced Cable Male Jack 4.4mm to Male 2x XLR OFHC Copper Silver 1m - Audiophonics
iFi Audio unveils a beautifully designed balanced cable, consisting of one 4.4mm male jack and two 3-pin XLR connectors. The cable features OFHC copper...
https://princetonscientific.site/products/ZCU250M/
ZCU250M - Princeton Scientific - Gasket Etched OFHC Copper Pk 5 305 OD Metric Flange
Princeton Scientific stocks (Product ZCU250M) - Gasket Etched OFHC Copper Pk 5 305 OD Metric Flange
https://shop.alchimica.cz/p/7440-50-8-copper-sheet-ofhc-3-15-mm-99-99-1-x-50-x50mm-gx9478/
Copper Sheet (OFHC) 3.15 mm, 99.99% (1 x 50 x50mm) | Alchimica
copper sheet