General-purpose selection of the most frequently used nut drivers; cushion grip handles allow for greater torque and comfort; patented "Tip-Ident" quickly identifies nut driver hex orientation and size by color coding the handle ends so you can easily engage the nut driver with the fastener; internal flanges provide solid, twist-resistant shaft anchor; set contains: 630-3/16, 630-1/4, 630-5/16, 630-11/32, 630-3/8, 630-7/16 and 630-1/2.