The Permacel Photoblack Tape is a highly adhesive tape ideal for film production and darkroom work. Its matte black finish and high-tack formula securely bond to glass, metal, wood, and plastic. Essential tool to use against light leaks, securing set cables and fixtures, marking actor positions, and fastening film reels. A trusted choice for studios and production crews. This small-core roll is perfect for attaching to belts, tape straps and other carabiners. Specifications Width: 48mm (2") Length: 27m (30 yards) Backing: Black-impregnated paper, fully opaque, matte finish Adhesive: High-tack rubber-based Total thickness: 7 mils (~0.18mm) Tensile strength: 24 lbs per inch Properties: Non-reflective matte surface, hand-tearable, easy unwind, residue-free removal Bonds well to: Glass, metal, wood, plastic Typical applications: Sealing light leaks on cameras and film holders, blackout sealing in darkrooms and processing labs, photo cropping and edging, masking film backs, marking on set