From John Stanley Antique Tools -

We are pleased to offer you this barn fresh pulley block with 32 feet of original old hemp rope(5/8" diameter).  The pulley block has a cast iron frame with a wooden sheave.  Measures 10 1/4" overall long, the sheave has a 5 3/4" o.d. and is 1 11/16" wide.   The top has a swivel that turns.  This is being sold as a superb decorator item due to the fact that the wooden wheel has a crack as shown.  Not being sold as a user item.  Great for that steampunk or industrial look.
We will gladly combine items to save on your shipping costs.