These sockets are designed and built to have proper clearance for yoke and locknut assemblies on a variety of truck transmissions and differentials. The sockets have 3" of useable depth and are 4" long. Using the right tool saves time and effort and eliminates the need to destroy standard sockets by grinding them down to fit tight pinion clearances. Contains: tool board and (6) 6-point sockets: 2" (OTC-1975), 2-1/8" (OTC-1976), 2-1/4" (OTC-1977), 2-3/8" (OTC-1978), 2-5/8"(OTC-1979) and 2-3/4" (OTC-1980).