The listed price is for a pair!This rivet size is used not only for beta biothane straps.The correct size of the rivet is determined by the thickness of the material being joined, such as biothane, nylon strap, leather, or textile. The correct size of the belt screw is when the length of the screw nut is 2 mm shorter than the total thickness of the material being joined.Biothane Standard material width is between 2.1-2.4 mm.Recommendation: for stronger joints, apply a little thread adhesive to the screw - available in our TOOL section.Material: SteelFinish: Nickel-plated