Best thing: 15 strips!!! (1 set of 5 strips in the packet and another 2 sets separately, i.e. 10 strips). However, the needle and piercing devices seem like for car tyres and NOT for bike ones. Both of them are really big/thick when I tried on my bike tyre. So, that's the only confusion I have. Repaired, checked and riding along smoothly. Happy fixing and ride safe, everyone!!! :)