yes size matters [SEP] i have two pairs of glasses that lost a screw each years ago if i lost a screw i would go to the local drugstore and buy one of the little combo screwdriver magnifying glass that came with about a doze screws i do not ever remember those screws not fitting whatever glasses sunglasses i tried to fixi looked at a lot of kits that had dozens or hundreds of screws of varying sizes i read through reviews and even with the huge selections and variety of screws there was a surprising number of people who complained that none of the screws fit their glasses i decided to steer clear of those and settled on this kit because of the variety of other items included however after pulling out my magnifying glass i tried each screw size one by one and none fit two were too large and one was too smallsince the smallest went through the hole i decided to try using one of the nuts that came with the kit first i could not tell what fit with what because there is no guide second after trying the nuts on the smallest screw i found they did not fiti finally just stripped a piece of copper wire from some speaker wire i have laying around and threaded it through the hole in the glasses and tightened it down so at least i have something that will hold until my eye appointment and i do not have to worry about the lens popping outi am keeping the kit i will probably just pick up a few screws from the optomitrist once he lets me know what size i need and replace the ones that are in the kit so it is not a complete loss i am not sure when or if i will need the other items that come in the kit also there are things that came with it that i have no idea what they are for one of those are some very tiny plastic cones i am sure they have a purpose