Our products highperformance automotive components for racing, street and offroad use. We always work towards to fulfill the requirements of our end users. 3/8 x 3/4x 5/16 Hex Head, 12 pack. Features. High quality construction and durability. Variety of styles for every type of accessory. Pack of 12Specifications. Hes Head 0.37 x 0.75 x 0.31 in.