Features and Benefits: Includes a handle and discs 5/8 - 2 in diameter Specially selected to provide the driver sizes usually needed in automotive service Includes plastic storage box Weight is 4 lbs. 2 oz.Assemble your own custom-made driver Tools. Have the proper-size driver for any seal bearing or bushing installing job. These sets include: Discs and handles you assemble to provide a pilot (to prevent cocking) a spacer (so force is applied on the proper area) and a driver (for even force distribution). All you need for a starter kit.