The main pin has two pin posts, the hand has one. The chain attaches to the pin posts on the back of the pins. The chain is detachable so you can display the pins however you like. The main pin is 2 inches (5 cm) long, the hand is a little under 1 in (2.5 cm). Each pin has gold plating and hard enamel.This listing is for mixed grade pins. You may receive a standard grade pin, which has minimal or no flaws; or a seconds grade pin, which may have more notable flaws. Please do not purchase this listing unless you would be satisfied with a potentially seconds grade pin. For my complete pin grading policy, please see my About & FAQ: linktr.ee/ultra.infinite