Use to hang pendants. Gently pry open, put bead on one post, and squeeze back together, lining up second post with hole. The gap where the bead fits at it's smallest is about 4 mm - but opens to take up to a 6 mm bead or so. Loop is .9 mm hole. Notice the loop goes front to back on this one, instead of side to side. Lead, nickel and cadmium free.

Lead-free. Nickel-free. Made in Israel. 3mm x 12mm By the each.