If you start out and get confused and need to remove a few inches of tape just throw everything in the trash, you won't have enough to finish. The tape also stretches (thins) very easily unless you're performing the entire installation in one smooth, continuous motion, suggesting that after the tape unrolls about a foot, the backing tends to curl up withdraw into the applicator, so you have to stop to unhook it. and cut off the excess backing. What you REALLY need to get right is this. A: A bike stand so the wheels are off the ground and can spin freely. Tape and spin the wheel, your entire focus is on controlling the pressure on the applicator and smoothing out the tape as it comes out, as the applicator won't flatten it out completely unless you follow the applicator with your finger, the tape may still move, stretch or fold after application. I suggest you don't get this, but if you get 2, because if you screw up even a little bit, there won't be enough tape in one set to finish the job.