Please connect parts and charms to the ring with a lobster ring or circle ring. Since the hook part is large, it can be used for a wide range of purposes by hanging it on a bag, belt loop, etc. The opening/closing part can pass up to a thickness of about 7mm. *As this is an accessory, the color may change to reflect changes in fashion. Also, during the processing process, color shading may occur without prior notice. (Some parts may differ in color from other parts.) *Please note that this is not for mountain climbing.