Inhouse product
Outer Diameter: 3/4" (19.05 mm)
Wall Thickness: 0.032" (~0.81 mm)
Material: Soft annealed copper (ASTM B280 HVAC spec)
Shape: Pancake coil roll
Length: Usually ~15 m (varies by supplier)
0.032″ is a standard/heavier gauge for higher pressure A/C systems compared with 0.028/0.030.