I actually did go the distance with getting all the required install gear for my setup Haris bhai. Unfortunately we won't see it now since I've sold everything but here's how it went
Tessa tape isn't something used commonly here. Apart from the fact that it makes your wiring look factory, it actually protects your wires and it helps them from flapping around making annoying noises
Xt60 quick connects are great when installing aftermarket speakers/Midrange/tweeters/subs etc, because you can quickly disconnect the wire so everything is serviceable
Usual speaker wire terminals are basic equipment and those too ain't used by shops walai because twisting wires is more fun. Ferrules are something not even heard of and yet i have all my wires ferruled
Heatshrinks. What heatshrinks? Desi netto tape zindabad. Solder? Crimp Lugs? Ask most shopkeepers about these and they will stare at you like you're a Martian
Model specific speaker rings are unheard of. Most shops will use the same universal speaker rings ( they overcharge you for it because the chipboard rings are considered normal ) on every car.
This is where threaded nutserts and threaded Wood nutserts come in. Rather than just forcing a screw into the metal door to hold the ring in place ( which most of the time will either slip the first time or after you've removed the ring and trying putting it on again ), the nutsert makes the install/removal of the ring ( or any equipment that's needs to be screwd into the metal body ) possible. And you don't need a fancy install tool either. There are easy ways to install them.
Finally, the CCF foam around the speaker comes in 3 parts. Atleast the Stinger kit does but for whatever reason, Stinger uses OCF which is weird because it absorbs water. The job is simple. Divert as much of the music out of the door then Loosing it inside the door itself. The rear piece which some people install and some don't actually is to cancel the backwaves from the driver itself.
Sound deadening has only taken up speed now amongst shops but only a handful of people started doing this since quite a while back. Most of those individuals are pakwheelers but almost all of them have left the forums because it isn't what it used to be. Regardless, almost every shopkeeper will tell you that by just installing the deadener, your car will transform into a RR. What BS. It takes much more than just a deadener to achieve a few -dBs. But atleast it does eliminate the metal resonance which is absolutely terrible in cars like this Alto
All of these install equipment was purchased by me for my corolla built. Most of it was given away to @DrShaggy who I know will put good use to it. The xt60 connectors were also given out to other members who bought my equipment. I've saved some for my 3 cars which I will be doing myself ia soon