The BOSTITCH BTMT72287 65pc Pass Through Socket Set features heavy duty ratchets with 72-Tooth Gear System for low arc swing, high torque ratcheting & better accessibility. The Pass Through design allows access to fasteners that deep sockets cannot reach. The ratchet handle is enhanced with rubber grip for comfort. The sockets have durable stamped size markings for easy socket size identification. Constructed with chrome vanadium steel construction for added strength and durability. Includes a durable blow mold case for tool portability and protection.