The hole size is approximately 1.5mm. It's very light, so it's also recommended for bulky accessories. Please connect the parts with pins or pass them through wires, etc. Since the pin may come out, please use it by passing other parts in between. *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. Please note. (Some parts may differ in color from other parts.)