Fold over style finding is designed for use with cord materials in the 1mm to 2mm range. End loop is closed. Overall length is 9mm; opening in the fold over slot is about 2.3mm wide and there is a small tooth (very hard to see in the picture) that helps to keep the cord from pulling out. Picture shows front view (top of picture), cord crimped in finding (viewed from the back), side view (middle of picture), and back view (bottom of picture). Solid copper constructuion, very sturdy, sold in packages of 10 pieces.