Review on GEARWRENCH 3529D Heavy Filter Wrench by Keith Gonzales

I work as a diesel engine repair technician in a large shop. This filter key works 99% of the time. The other 1% of the time it slips and you end up punching through the engine block or frame. Only 4 stars because it wouldn't be that hard to tighten the inside diameter of the wrench. Also the wrench sometimes likes to get stuck on its own rivets and it hurts a bit in tight spots. They work well but can be improved to make them more user friendly. Very strong. I use mine with a 1/2" Matco Breaker and a 12" ratchet.