Armstrong 10-994 1/4-Inch Drive Armstrong MAXX Locking Flex Ratchet Made in the USA - Quality and Availability 9-Position Locking Flex Head maximizes safety and maintains position regardless of load Unique enclosed head (no screws) with two O-rings resists contaminants for extreme strength and long life. Sleek tapered head with a low profile design permits access in extremely confined areas. Recessed reversing lever has as On/Off markings for SAFETY