Integral Magnetic Clasp/End Cap.

This finding is a combination end cap/magnetic clasp/twist-lock finding. You merely insert one part into the other, and the strong magnetics create a firm seal. Then, give it a small turn, and the two pieces lock together so you can't pull them apart. Your necklace or bracelet will not come apart even with an unusual pull or other stress. When you're ready to take it off, give a simple turn to unlock the pair, then pull it apart as you do for all magnetic clasps. The ease and convenience of a magnetic clasp with the extra security of the locking mechanism.

Made of solid brass with a silver- or gold-color plating, this is a nickel, lead, and cadmium free formulation. The overall size of the larger set is 17mm x 8mm, and the inside hole diameter is just under 6mm; the smaller set is 14x5mm, with an inside hole diameter of 3mm. The other hole diameters (4mm and 5mm are proportional in overall size). Sizes are inside hole diameter, ±¼mm.