Thanks! Works perfectly for my Modulus Stryfe. Easy to grab and remove. I tested the spare one on my Dart Zone - Destructor and it fit that too! So I will definitely be buying another pack or two of these babies in the future. They come in a small round clear plastic container with a screw-off top like some other screws or small parts from Worker do. Shipped USPS so fairly quick, and no-stress delivery.