Up for sale here is this vintage Walsco idler wheel. This is new in the original package, and the rubber is still soft. This is guaranteed to be good. This will fit the Bell & Howell 785 series as well as the Traveller TT-5925 & TT-595. It may fit others as well.
Please be sure this is the exact idler wheel you are looking for before you buy it. Please see my pictures for details.
US shipping and handling is $5, and international is $18. If you have any questions, please ask.
I have a number of other idler wheels, collectibles, and vintage electronics listed--feel free to take a look!