CRAFTSMAN CMHT65073 CFT SD BI-MATERIAL 4PC PRECISION, Red

High quality forging, forged from heat treated chrome vanadium steel, each socket surface treated with corrosion resistant black phosphoric acid to prevent oil and rust.
Laser marking, each with a clear laser size mark, makes it quick and easy to select even in dim light.
6-point socket design expands the contact surface between the socket and the fastener, increasing the locking force, reduces wear and prevents rounding off at corners