TierraCast has come up with a fantastic design for multi-strand toggle clasps. This set comes with two 5-hole D-rings and a single loop bar end. To use this clasp simply attach your strands to the small holes in the D-ring. The two D-rings are brought together by attaching the bar to one of the D-rings with jump rings (not included). The second side of the clasp is secured by feeding the bar into the D-ring itself.
Toggle bar measures 29.5 x 4mm and its loop has a 2mm inside diameter hole.
D-Ring measures 19.5 x 15.4mm and the 5 holes have an inside diameter of 1.5mm.