3pcs Universal Joint Swivel Flex Socket Set Silver Tone Extension Bar Rod Adapters 1/4, 3/8, 1/2

High quality chromium-vanadium steel, high hardness and durability, long service life
Universal joints are flexible joints that allow you to use a socket with a ratchet, breaker bar, or extension
Three universal joint sockets: 1/2inch, 3/8inch and 1/4inch
Spring-loaded ball bearings hold sockets securely
Heat-treated, forged steel