3M Gray Auto Car Truck Double Sided Adhesive Mounting Tape 9.8 Feet, Select: Width Widths offered: 1.¼” 6mm 2.5/16” 8mm 3.3/8” 10mm 4.½” 12mm 5.¾” 20mm 6.1” 25mm 7.1 3/16” 30mm The adhesive is clear and not the standard black adhesive used in auto mounting tapes. However, the adhesive is embedded into a foam core and the overall appearance is grey and not transparent. This means that when a molding is attached to a vehicle that there is a seamless blending of the molding to the vehicle and not a black outline line at the meeting edges. If you need a transparent crystal clear mounting tape, please search the term 'transparent' in my Amazon store. Clear core double sided tape is ideal for attaching vehicle body side moldings, trim and emblems. Strong bonding and easy to use. Cut to size, no mess. Designed for the attachment of a wide variety of automotive exterior and interior trim including body side moldings, claddings, rock panel trim, wheel flares, bumper trim and most other automotive trim. Strong adhesion to automotive substrates. Weather and car wash resistant. Comfortable. Can be used on textured surfaces, such as painted cement or brick. High-strength core maintains a thin, consistent bond line. Easy liner release The length of the 3M soft pliable tapes is the stated length on the core, eg. 9.8 feet (3 meters. However, the applied length of these tapes depends on whether they are compressed or stretched during application, ie compressing decreases the applied length, while stretching increases the applied length. Sometimes compressing is need to fill deeper molding recesses and when attaching a molding to an irregular surface, while stretching is appropriate for thin or no recesses in molding and applied to a smooth regular surface. I suggest adding about 30% to the surface length of your project to allow for applied shrinkage.