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.
Made in European Union. 21mm x 8.5mm Hole size is approx. 4mm. By the each.