Top quality, Venture brand foil. 108 feet long. 1mil thick. 5/32 inch wide. 1mil thick copper foil is easier to fold down over the edges of your piece than standard 1.25mil tape. Only 5/32 inch wide, it's thinner than most copper foil as well. Telling your foil apart is easy with Venture Foil Tape. The inside ring for 1m is always purple for easy identification. Delphi Tip: Choosing the Correct Foil When using transparent glass and bevels, choose your foil based on the color of your solder seams. Choose copper backed foil if using a copper patina Choose black backed foil if you are using black patina Choose silver backed foil if you are leaving your solder silver

Use thinner 5/32" size when foiling thinner glass, and to achieve finer solder lines. Use when working with opalescent glass, and transparent glass when you will be using copper patina. High tack and heat resistant adhesive back securely holds foil in place. Flexible copper foil created for the stained glass artisan.

Date First Available: December 23, 2013. Manufacturer: 3M. Item Weight: 2.39 ounces. Best Sellers Rank: #92,881 in Arts, Crafts & Sewing. Customer Reviews: 3.9 3.9 out of 5 stars 17 ratings 3.9 out of 5 stars. : B00HHCS5PQ. Item model number: 1. Package Dimensions: 6.5 x 4.6 x 0.2 inches.