The HA-3 complete REACT System is the most cost-effective and efficient machinery alignment system available anywhere. The REACT System combines the most versatile and sturdy stainless steel hardware in the industry. The HA-3 is designed for the "Rim/Face" method only. The system accommodates shafts from 1/8" to 5" and includes all the necessary hardware, clamps, chains, etc. all packed in a sturdy aluminum carrying case. The kit contains roughly one half of hardware as the HA-2