Features and Benefits: Forged from the finest chrome molybdenum alloy steel – the best choice for strength and durability; Radius corner design – to extend the life of fasteners; Design drives the side of the fastener instead of the corner; Provides increased strength, but also avoids rounding of rusted or damaged fasteners; This is an impact socket. It is 1-7/16 in. It is 3/4 in. drive and 6 points.