Closed rivets are used where both sides of the rivet are visible, or where the rivet comes into contact with another surface, for example, handles of bags, grips, leashes, collars, harnesses, etc.The listed price is for a pair as shown in the photograph!This rivet size is used not only for beta biothane straps.The correct rivet size is always determined by the thickness of the material being joined, such as biothane, nylon straps, leather, or textile. Always add 2mm to the width of the material.Material: SteelFinish: Brass-plated