These have been manufactured with Rack Plating, with a brass base and long lasting rose gold plating. The magnets are Grade N45 strong magnets, and the clasp comes with soldered closed jumprings, which is perfect for stringing with wire or thread as they can't pull through a join in a jumpring this way!
Size: about 6mm wide, 11.5mm long, hole: 1.6mm; ring: about 4mm in diameter, 0.5mm thick.
Quantity per pack: 1