A well-constructed swivel bearing. Easy to attach to a 1/2 solid rod. (Note, this does not fit 1/2 pipe, which has an outer diameter larger than 1/2.) The threaded end swivels. To hold it in place while screwing something on to it, you must insert a Phillips-head screwdriver in the back. This means the whole swivel bearing must be removed from the connecting rod whenever you want to add, remove, or adjust the connection.