Well this explains a lot about Ed...
Backings: 2 Rubber Backings
Enamel: Soft Enamel
Plating: Black Nickel
Shipping Time: All orders ship same-day or next-day, and typically arrive within 2-3 days of ordering.
Standard backings are either Rubber or Metal Butterfly backings. These will securely hold your pin on, but locking backings are almost guaranteed to keep your pin in place. Think of them as 'pinsurance' for your most prized pins.
Really enjoy. One of my favorite pins
I ordered 4 pins and they got lost in the mail. I contacted kolorspun and they shipped out replacements and i had them super fast. They even threw in an extra freebie for the screw up that was not their fault. Great product as well.
Wish I had the whole gang!