EZ Red's 8 piece metric hexdriver set, No. EZRMXDS, features a 20 degree ball-type hex and a 1/4" ratchet well in the end of the handle. Hexdrivers are made with heavy duty SR2 steel and have a bolster for extra torque as well as a comfortable micro grip. Available in sizes: 9/64", 5/32", 3/16", 7/32" 1/4", 5/16", 3/8" and 1/2".