*Cast in a base metal in bright silver in butterfly style clasp has a clear rhinestone center. This is a basic fold over style clasp that does not contain a magnet, simular to that of a basic watch clasp. These are made for 2 strands with 2 holes on top and bottom. No. of holes per side: 2 Hole location and style: holes on top and bottom Approx. measurement across loop: 8.2 mm Approx. measurement across: 31mm Approx. height measurement: 13 mm 6 clasps per package 25.4 mm = 1 inch All beads are one sided as shown in image.