This is a galvanized ductile iron swing hanger with a shackle pendulum, opening 1/2" wide. These hangers are cast in two halves. The lower half of the swing hanger body has a shackle pendulum with a sintered bronze bearing incorporated into it to reduce wear. These bearings do not need to be oiled as the bronze is impregnated with oil. It has a .51 ID oil light bearing and axle bolt with lock tight nut and accepts a 12 mm bolt. The pendulum is 1” wide and has a shackle with bolt so that there is no need for a connecting S-hook. The shackle pendulum is tamper resistant. It requires an Allen wrench with a special pin hole head. The two halves of the hangers are bolted together with a 12 mm carriage bolt and a hex lock tight nut. The pendulum is held to the hanger with a #12 axle bolt with a long shoulder, so the bearing does not ride on the threads. It also has a lock tight nut. This hanger fits a standard schedule 40 two inch pipe. This product should last 2 years in harsh conditions and up to 5 years in optimal conditions. Some conditions may require replacement sooner. Tensile strength is 7900 lbs. Sold as set of 2.