Sprocket fed gerber slotted hole punch. (48.0mils w/o liner) 
Tan rubber with medium tack rubber adhesive, yellow mylar, and a light blue liner.
Hole pattern slotted for Gerber type sprocket. Rubber extends to edge.
#124Y yellow mylar available in widths of 30" and 15" in 10 and 20 yard rolls
#124 clear mylar available in 15" width, 10 yard roll only.