The Snap-on 7-pc Steel Large Bearing and Seal Driver Set, No. A1310LHSB, is designed for Class 7 and 8 trucks/trailers, heavy duty, and oversized jobs. Made in the U.S.A., the set includes a striking handle, engineered to transfer the strike load efficiently and keep hands safe, and a patent-pending Snap-on detent attachment system for quick release without the hassle of threaded fasteners. The set's double-faced, durable steel disks are black-oxide coated with a tapered side for bearings and flat side for seals, to prevent damage to vehicle parts. Able to be used with an array of different handles and adaptors, the set includes popular sizes with internal size markings to easily locate the right tool for the job.