SK Hand Tools 19767 11pc 3/8"Dr Torx Bit Holder Socket Set. Bits are available for all common fastener patterns. With use of a ratchet, t-handle or similar, they offer high-torque capabilities. With the help of an extension or universal joint, they can reach into awkward spaces. Bits are secured in the bit-holder by a spring "c" clip. Bit holders are Sk superkrome finished. Contents: 3/8"dr bit socket in both 1/4" & 5/16" shank size. T10, t15, t20, t25, t27, t30 in 1/4" shank size. T40, t45, t50 in 5/16" shank size. Packaged on a plastic rail.