Slender fasteners, also known as brads (5 letters), are small metal pins used to join two pieces of material together. They are typically used in woodworking and carpentry, and are inserted into pre-drilled holes. Slender fasteners are usually made of steel or brass, and have a sharp point on one end and a flat head on the other. They are often used in place of nails or screws, as they are less likely to split the material.