There are various kinds of handles, and there is no standard for the variety of specifications and uses. There are a lot of die-casting factories that make these handles, but they are generally small processing plants. If only one or two words, I think there is no need to find a needle in a haystack to look for the same type, you can find similar to replace, generally to the hardware store can be bought. If the number of big words, you can go to find die-casting factory customized, do this thing to do molds, so the amount of small words is not cost-effective to do, the larger the amount of the cheaper it is. I hope you can help you ~~~~~~~~~~~~
To amount so big then go to customized. There are factories everywhere that do die casting.