The DEWALT DWMT75049 192 pc. Mechanics tools set offers a number of features that appeal to mechanics tool users. These pieces have knurled beauty rings that provide a non-slip gripping surface, along with deep laser etched markings for easy socket size identification. A 5 degree arc swing and slim head design perfect for maneuverability in constricted areas. The 72-tooth gear system is designed for high torque ratcheting and a low profile directional lever helps reduce catch points and for easy one-hand operation. This all precisely fits into a durable molded case for easy storage and tool protection.