Designed to apply peak torque, the 6-point of the TEKTON 3/8 in. x 7 mm superficial Socket snugly fits the hex shape of fastener heads, so there 's no opportunity for slipping. To prevent clapping off, it the unpleated sides of fasteners rather than the corners. With a superficial well and melt off walls, this socket the clearance to fit into equal, narrow spaces. dog interior the drive end securely hold socket onto ratchets and extensions, so it wo n't fall off or stick on fasteners. Made from agiotage chromium-plate vanadium steel, it 's from rust and corrosion by a long-wearing mirror chromium-plate plated finish.