Fold over style finding is designed for use with cord materials in the 1mm to 2mm range. 4.5mm diameter end loop is closed. Overall length is 11mm; opening in the fold over slot is about 2.5mm wide and there is a small tooth (very hard to see in the picture) that helps to keep the cord from pulling out. 14kt Gold Filled, very sturdy, sold individually (but most projects need 2 crimps).