The DeWalt XTREME 12V Max Cordless Ratchets are designed with a glass-filled nylon tool housing that provides resistance to automotive fluids and solvents for use in automotive and other demanding applications. The ratchets are available with 1/4" (No. DCF504), 3/8" (No. DCF503), and 3/8" extended reach (No. DCF503E) square drive configurations, with the 3/8" extended reach model delivering 3.9" greater neck reach versus the DCF503. The 1/4" 12V Max XTREME Ratchets feature a 40 ft-lb maximum torque brushless motor, while the 3/8" Extended Reach Ratchets have a 60 ft-lb maximum torque brushless motor.