These twist ties are perfect for durable, removable and flexible binding closure of bags. They are Metallic wire ties with flexible PET materials outside, they are easy to use and easy to undo, perfect for your PC power cord, charge cable, earphone. Specifications: 1.Durable, sturdy, reusable, long lasting, water-proof, and won't scratch or mark. 2.Material: Metal & Plastic. 3.Color: White.