here is a few more, rated at 4,000 lbs , for the cheap too
just do a search for
" block and tackle 4:1,"
and there is no shortage out there form these cheaper one to higher end one's!
https://www.sears.com/generic-2-ton-...&blockType=G10
https://www.sears.com/tuf-tug-tuf-tu...1&blockType=G1