Magnetic clasp - acrylic body, lacquered finish. Two magnets - no hook or knob, so they can slide sideways - but these are darn strong magnets. Glue onto leather, cord, silversilk, viking knit, or kumihimo.
Lead, nickel and cadmium free. Hypoallergenic. Lightweight.
Lead-free. Nickel-free. Made in European Union. 21mm x 8.5mm By the each.