Review on ATD Tools 3310 Thermostat Wrench by Andres Mayes

I wish the handle was longer but I won't complain, I ended up putting a cheat bar on the handle and it easily broke the lower thermostat housing. It was difficult to get to the bolts, but that's due to the exhaust, not the design of the key. If you have a GM car with a 3.1L/3100 engine you absolutely need this key, I needed it for my Buick Century, it only took me half an hour to do a 3 hour job.