Description: 1. Material: head (pure copper), tail (pure copper), chain (stainless steel) 2. Feature: You can reduce and add links to adjust the length of the hand bracelet chain which is strong, durable and versatile to wear. 3. Function: Tactical defense. Can be used as the hand bracelet chain, necklace chain, waist chain, and car hanging decor. 4. Size: (approx.) diameter: 8 mm/ 0.31 in ; 10mm/0.39in length: 101+6cm/ 39.76+2.36 in