Pro Application Tool 3M Primer 94 Promoter Pens- 5 Pack 3M Tape Primer 94 pen be used to promote adhesion of 3M tapes and films like DiNoc. Commonly used in applying dash kits, vehicle wraps, Tints and other automotive products. Step by step video installation application guide online. Toll free phone support provided. This is an installation tool recomended for DIY installers to achieve professional results.