... ", 1.25", 1.5", 2", 2.5", 3", 4" 2. Material: Aluminum, Pure Oxygen-free Copper 3. Lay: 2 lays and 4 lays Round wire coils, Production ... sizes are from Φ5.0_Φ200mm.Round wire coils include 2 layers, 4 layers, 6 ... , even up to 12 layers.And beyond with the option of winding ...