This auction is for used snatch block , unknown maker , cast stainless construction with a bronze sheave , I could imagine this fized on a gantry or heave davit . Unit is 8" x 12&1/2" overall and is 4" deep . Bronze sheave is 4&1/2" wide and 3&1/2" diameter . the sheave displays some wear as it looks as if it was used for cable , all bolts and pins are complete with safety cotter keys . Eye bolt hole is 7/8 " diameter . Unit weighs 24 # . There is no other defect to note , first class construction in excellent shape . . Check out my E-bay store , by clicking on the red tag by my name , I am listing lots of new and used marine gear for the next couple of months, ebay has a great " in store google " so stuff isn't too hard to find , so check it out . Thanks for looking . Buy with confidence .