If you’re going to bother making your own RCA leads, using the best components is a great place to start.
Neutrik’s ProFi RCA connector NF2C-B/2 (twin pack) is a high-performance option, that has a couple of very nice features.
Aside from the gold-plated contacts and chuck-type cable strain relief, the ProFi connector has an ingenious design, requiring the ground to make contact with it’s mated connector first – avoiding nasty pops and cracks ripping through your speakers, if you are hot-plugging for any reason.
A nicely weighted connector that looks stylish, and out-performs most RCA options out there.