Royal Diversified Products Inc. (Warren, R.I.) has added side interlocks and round interlocks to its line of pins, punches, perforators, and other specialized mold and die components. The side locks and round locks are designed to extend the life of core pins and ejector pins by providing consistent alignment of mold halves. The male section of each lock is machined from tooling steel with black oxide, and the female component is made from D2 tooling steel. Both subcomponents test to Rockwell C 58-62 hardness. Side locks come in eight sizes. The Royal Round (tapered) locks are D2 tool steel to Rockwell C 58-62 hardness and come in 12 sizes. Royal Side Locks are priced from $123.50 (USD) and the Round Locks start at $21.99.