Steelman Pro 97887 8 Pieces 3/8" Drive x 9" Long Ball-Joint Impact Socket Set (10-14mm,16-17mm,19mm,8pc) EXTEND YOUR REACH - 6-point sockets on pinless, swivel head 9-inch extensions allow for easy access in tight spaces HIGH STRENGTH - Made from high strength, heat-treated 4140 chromoly steel CORROSION RESISTANT - Black oxide protective coating provides increased corrosion resistance KNURLED SHAFT - Knurled shaft allows for easy hand-starting and tightening of fasteners to prevent cross-threading MAXIMUM TORQUE TRANSFER - Pinless joint design transfers maximum torque from driver to socket WIDE RANGE OF MOTION - With a wide range of motion more angles are available to work from making it easier to reach fasteners INCREASED SAFETY - Pinless design prevents projectiles common to pinned designs in the event of breakage INCLUDED METRIC SIZES - 10, 11, 12, 13, 14, 15,17, and 19mm