Available in 1-, 2-, and 3-piece styles with straight-through bores or stepped bores for joining different size shafts, Stafford Heavy Duty Rigid Couplings are constructed to carry heavy torque loads in large equipment and process systems. Available with or without keyways, couplings come in ¾–6 in. ID sizes and are made from steel and stainless steel. Products can also be manufactured from other alloys and modified to customer specification.