The quality of OTC tools is definitely a guarantee. You can pay more for their tool line, but it's worth it. The right tool always makes work easier. A quality tool can make you feel better. This wrench was used to remove and then install the oil seal cover of a hydraulic cylinder (skid digger). Definitely a special tool for a specific purpose. If your application requires a box wrench of this size, the OTC885 is for you.