Silver Pyramid Stud - Type 2 Bevel Edge - Half Inch Size
 
One of the most common shape and size used. The redesign of the 1/2 inch (Size 13) stud. This one is TypeII. This design is commonly used on belts, jacket ends, and bracelets. 

An attractive and basic shape, this stud head is in the shape of a four-sided pyramid. A common shape used for apparel, leather-crafting, shoes, jackets, garments and other projects.

Studs are embellishments added to your garment, apparel, or clothing item. These studs are easily attached with prongs to most any project. Commonly used for DIY leather-crafting, belts, bracelets, handbags, shoes, punk and alt-couture jackets, dog collars, etc., studs are set by pushing the prongs through the material and bending them inward to attach.
 
Two-Prong Studs
These studs are great for applications on materials like denim and leather, or to be used on materials with a sturdy backing. Generally, these are great for material thicker than 1.5mm (1/16 inch).The two prongs range around a quarter inch (6mm) so can be used on many different types of projects.