The gearwrench 90-tooth ratchets have a 4 swing arc and a low-profile head for easier access to hard-to-turn fasteners. The 90-tooth design exceeds asme torque performance requirements, delivering one of the strongest ratchets on the market. These gearwrench ratchets help you get it done. features: 90-tooth gear delivers a 4 swing arc to turn a fastener in tight confines teardrop, low-profile head and flush-mounted on/off switch allow better access in tight spaces locking flex-head with 9 locked positions and unlocked option for adjustable access angle enclosed head design for extreme resistance to dirt infiltration precision engineered high strength pawl for increased durability highly visible on/off markings on the head bright, full polish chrome finish easily wipes clean and resists corrosion meets or exceeds asme specifications