Slip the pin in eye first notch then cup the eyelet on top squeeze down and rotate down it will close the eye down blade wont slip out. I use stainless steal eyelets and the bass ain't going to bend those no matter how big they are. Ive built alot of blade baits in my time and I've never had one fail. Use round nose pliers you wont scuff the powder paints at all. Channel lock pliers you will if your not careful.