Black plastic slides or slider buckle (also known as a tri-glide slide) are used when adding an adjustable feature to any strap. This wide slide receives 2-inch webbing and is used most in bag straps and pet harnesses along with many other custom products. The outside dimension of this product measures: 1.30"x1.57" and the loop that receives the webbing is measured at 1.93" x.25" and has a .31" wire (thickness)