MATERIAL METAL - Our five-claw buckle set has five thickening claws made of copper, and the pliers are stainless steel. Both materials are durable, easy to handle, and quite hard. COMFORTABLE STORAGE - Our fully functional plastic boxes are packed for easy storage and transportation, and each accessory is self-contained, so you can quickly locate what you need. WIDELY APPLICABLE - This selection of sewing buttons is suitable for sewing projects such as making one-of-a-kind bags, garments, shoes, etc. QUALILTY - Copper is used to make metal snap fasteners, which are expertly made, of good quality, and long-lasting. All levels of female tailors are suitable. SIMPLE TO USE - If you're not very good at it or if you're using it for the first time, we urge you to practise with a bad cloth. Please keep children away from these items (Note: Please keep kids away from these products.)