Here we have a vintage Chisholm- Moore direct differential 1/2 ton chain fall hoist pulley system with swivel hooks.Larger pulley measures approx. 12 1/2" top bend of hook to base of wheel, smaller approx. 11 1/2" top bend of hook to base of wheel, weighs approx 30 pounds. Length of chain is unknown did not measure. In solid working condition parts move freely chains pull without hesitation. There are age use and storage imperfections that include scratches scuffs, paint coloration is ...worn off areas of dust and rust.As stated above hoist is in solid working condition it would make a great addition to any workshop garage or barn could even be a repurpose use piece. Please look at pictures and use the zoom feature for more of an up close view. I will not accept any returns, sorry for any inconvenience. Please email me with any questions. Good luck and happy Ebaying.