Description: Power chains are injection molded form material , and tent to maintain their elasticity over time and do not require to be frequently changed. It is necessary tools for dentist or dental clinic. Features: Long, connected rubber loop chains. Mainly used for teeth traction. Release soft and stable force value. Due to the larger elastic range, they can give continuous force. Fixed position, patients do need to change by themselves. Specifications: Material: Rubber Type: Transparent, red, pink, gray(optional) Quantity: 15 chains per roll Total Chain Length of Each Roll: Approx. 15FT Weight: 16g(approx.) Package Includes:1 Roll x Dental Chains