u/KindheartednessIcy12

I purchased this Brother 1034dx serger new (or maybe lightly used?). It sewed the overlock stitch without a problem. When I removed the left needle to sew a rolled hem, I forgot to completely remove the left needle before turning the hand wheel and it got stuck by the lower looper metal piece. When I remove it (using a needlenose pliers), a small pointed piece came out of the machine. It isn’t part of either needle. Can someone tell me what it is from and what it is used for? I was still was able to sew a rolled hem. Thank you in advance.