GearWrench 80442 3/8″ Drive Long Ball Hex Bit Socket – 4mm

features and benefits: patented bit holding system forces bit surface to opposing side for maximum bit retention – strengthheat treated socket base for durability and service abilitychrome socket; s2 and alloy steel bitball-end allows for using at angle off-axis to the fastener heat treated socket bases for durability and serviceability chrome sockets patented bit holding internal dimple retention feature force bit surface to the opposite side for maximum retention ball and hex shaft have black oxide finish and made of high quality tool steel