Copper foil tape by Edco, available in 3/16, 7/32. 1/4 and 3/8 in. widths.
Spools measure 36 yards long. Available in copper, black back and silver back.
What we have to say about the product
1/4″ is often used for beginners and is somewhat easier to center than smaller options. 1/4” may also be preferred when looking for a stronger finished product.