• Metal buttons are a popular type of fastener used in various types of garments, accessories, and upholstery.
• These buttons are typically made from materials like brass, stainless steel, copper, or aluminum, offering durability, strength, and a sleek, often stylish appearance. 
• They come in a wide range of designs, sizes, and finishes, making them suitable for both practical and decorative uses.

A snap button (often just called a snap) is a type of fastener commonly used in clothing, accessories, and textiles to provide a quick and easy way to close or secure items. Snap buttons are made up of two parts that "snap" together to fasten: a socket (female part) and a stud (male part), with a spring mechanism in between that allows them to snap into place when pressed.