Scotch Foil Tape 3311 is a conformable tape with silicone treated liner that unwinds easily to minimize errors and wasted tape . It is flexible and easy to apply in tight spaces, making it the ideal tape for duct repairs. The soft aluminum foil also conforms to irregular surfaces and provides a reliable vapor barrier.

3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
Dynabrade 95544 Gear Grease, 2.5oz. Tube
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926
Insize 1120-3001, DIGITAL INSIDE GROOVE CALIPER, 1.97-12"/50-300mm, 6928640384837
Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 68342, Cubitron II Cloth Belt 967F, 36+ YF-weight, 2 in x 72 in, Film-lok, 7010299098, 50 per case 
