KaShDa Set of 6 Silver Plated 14MM Toggle Bar Necklace Extenders 1", 2", 3", 4", 5" & 6" Handy set of 6 Toggle Ring and Bar extenders: You will receive 1 each 1", 2", 3", 4", 5" and 6" extenders. 3.7MM Silver Plated Brass Core Curb Chain. 14MM (about 1/2") Silver Plated Zinc Ring and Bar. The stated length includes the clasp. The ring has a hole size of 11MM (just under 1/2"). The bar is 19MM (3/4") long. See IMPORTANT SIZE INFO below. The shorter sizes can be used on bracelet. Hook them all together for a trendy necklace.