Can't find the exact CASE 688B Excavators you need? Post a free Want-To-Buy and get notified when it's available. Find CASE 688B Crawler Excavators you need on TractorHouse! Explore new and used CASE 688B for sale near you on TractorHouse! With shipping, financing, advertising options available, TractorHouse is your one-stop site for all of your CASE 688B needs.