Leading has Never Been Easier! Preformed, self-adhesive Redi Lead makes it easy to create simple or complex designs on glass. Simply tape a pattern to the underside of the glass. Peel up the 1/8 adhesive-backed Redi-Lead strips and press them onto the clean glass, following your pattern. Then simply begin to paint. The Redi-Lead strips act as a natural barrier between colors.. Education Categories: Art Education / Crafts / Glass Fusing . UNSPSC/NIGP Codes: 3010261400 - 05000000