MILLTRONICS Test Chains Roller test chains are used for belt scale calibration reference when material tests are not practical. All tests chains are bushed. (description not available) Chain weight/foot: 7.5 lb/ft (11.2 kg/m) Chain length: 7.5 lb/ft (11.2 kg/m) 8 ft (2.4m) – 11 ft (3.4m) (description not available) Total chain length: specify in plain text description (XXXX mm)