Copper line backer question?

CRL Antique Brushed Copper Vienna 037 Series Wall Mount Full Back

Pex / Pert to Brass Tail Adaptors – Compression Fit

Industville Brooklyn 13 Copper Dome Pendant - Copper Holder - BR

Gophers gain transfer commitment of Jaxon Howard, top-rated

Efficient Hot-Water Piping

Linebacker SE Copper Passive Power Filter PranaWire - Positive

Industville Brooklyn Outdoor & Bathroom Wall Light - Copper - BR

Now available at competitive prices - On-Demand Supplies - Order before 3pm for next day shipping.

Backer Copper Immersion Heater & Thermostat - 14

Bower Brushed Copper Dual Lever Kitchen Mixer Tap

Rise Loose Wire

Crimp Fit to Brass Tail Adaptors

Compression Fit to Copper Adaptors

Metals And Mining: An Industry At A Crossroads