These RCA Jacks were purchased directly from Mouser several years ago, for use in the Beezar/ECP Audio Torpedo and T4 Tube Headphone Amplifiers.  The difference between this RCA Jack module and the other one in my listing is the Red Right Channel is on bottom.  The jacks available in my other listing were from DigiKey and the Red Right Channel is on the bottom.

These jacks are absolutely brand new and never used.  They are designed with connecting pins to be soldered in through-hole fashion, with a set of plastic grips that snap into holes that should be designed into the PCB (refer to the drawings in the datasheet page shown).  Additionally, there is a mounting hole in the white plastic body that accepts a 4-40 screw for securely attaching the jack module to the casework panel.

Mouser's current price for this RCA jack module is $1.03 each with $4.99 minimum shipping (currently out of stock at the time of this listing).  My price for Qty 10 is $1.00 each (at $10 total).