These pins are specifically used with the type of snap called the "61 System Snap".
Material: Usually made of brass. This makes the product rust-resistant.
Function: 61 Alpha pin is one of the four main parts of the snap set and ensures that the snap cover and other parts are held firmly onto the fabric.
Areas of Use: It is preferred in light or medium weight garments, especially in products such as denim shirts, vests, seasonal coats and double-sided coats.
Installation: Just like other types of snaps, special insertion dies and press machines are used for the installation of 61 Alfa pins.