Morris Products 10331 Female Disconnect, Vinyl Insulated, Yellow, 12-10 Wire Size, 0.032"X0.187" NEMA Tab (Pack of 100)

I purchased these female disconnects to wire my Kicker L7 12-inches to Neutrik NL4FRX connectors using Skar Audio 12 ga wires. I got them to fit snug by squeezing them with a pliers. They were a bit pricey at $15.47 at the time of purchase. They'll get the job done. Highly recommended product.

I recently bought a bunch of  Powersonic PS-6100F1 - 6 Volt/12 Amp Hour Sealed Lead Acid Battery with 0.187 Fast-on Connector  to convert my kids' power wheels and gators and who knows what to 18v (3 of these batteries connected in series). I initially bought some connectors from Autozone but proved too flimsy. I replaced them with these and they worked perfectly. It is such a good value too: I paid 9 bucks for 100 (9c/connector) of them and shipped free by Amazon, while at Autozone I paid 3.25 for only 12 (27c/connector)...

Does the job. Quality product.