This is a vintage pulley with 2 steel wheels marked on the cast iron frame PAT and part numbers T14, T15, T2 etc It has a Cast Iron hook on the top. The iron wheels measures approx.2 ¼ " across and is 5/8" thick. It appears to be for a rope up to ½ " in diameter. It is 11 ½ " long with hook. It is over 5" wide and almost 2 ½ " thick. The metal has some rust, paint loss and wear. It has a rope brake or slip locking system. The cast iron brake moves into the tube to slow down or stop the rope when moved. This was part of a used 2 pulley with rope system. Several pulleys may fit into a USPS Flat Rate Box.