Numnuts^® is a 2-in-1 device that administers an Elastrator^® ring along with a pre-calibrated dose of local anaesthetic. This device makes giving fast-acting targeted pain relief for castration and tail docking of lambs easy, fast, and safe. The Numnuts^® Device allows producers and contractors to provide best practice without compromising on safety and efficiency. The device is robust, blood-free, and needle-safe. The modular design allows for parts to be changed to maintain good hygiene and efficient function. Numnuts^® has been used across Australia since 2019 and has been used to administer over 3.3 Million doses as of November 2022.