"End" Connector - Fits Nipple Water Pipe

I purchased several nipple water pipes for our new chicken coops I'm custom building and they will be auto-fed by gravity through the gutter and rain barrel system. I purchased the incorrect pipe (wrong end type). I love that instead of purchasing a whole new water pipe, I could just purchase the exact parts I needed inexpensively to replace it. It worked perfectly!

I BOUGHT SEVERAL OF THIS END CAPS, AND REASON FOR IT, WAS THAT ORIGINAL WATERERS DID NOT SEAL THE ENDS OF THE WATERER TUBES CAUSING MODERATE TO SEVERE LEAKAGE ON THE TRAYS WITH QUAIL MANURE.