Procat Automatic Knitting Needle

With an automatic center punch, you can make precise and hassle-free dot marks on hard materials like metal. The punch's spring tenses up when you press it down, and when it releases, it slams the punch against the material you're marking. Tip length 27 mm. How to use: 1. Place the automatic center punch where you want to make the mark. 2. Press the punch down. 3. The punch makes the mark on the material once its spring is loaded and released. 4. Repeat in the same spot to strengthen the mark.