The 6-pc 4WD Locknut Socket Set, No. 839, from Cal-Van Tools, is a 1/2" square drive set that allows technicians to use ratchets, breaker bars, and torque wrenches, and the set covers the most common light truck and SUV applications. The set includes a 4-lug socket, a 6-lug socket, a GM locknut socket, a Toyota 4-lug locknut socket, a Ford 4-lug locknut socket, and a FWD front spindle puller.