GearWrench Impact Socket Set 84930N 12 Piece 1 2 Inch Drive Metric 8 to 19mm Standard 6 Point (Cr Mo Steel Black Oxide Blow Mold Case) Dust Extraction 000 RPM Maximum Speed Rating: 000 RPM Maximum Speed Rating: Dynamically balanced dual flute body engineered for smooth Outfitted with wide knurled gripping jaws capable of twisting up to three solid conductors simultaneously and ergonomic Klein Kurve dual material handles these 6 point shallow impact sockets utilize off corner loading geometry to reduce fastener corner rounding while transmitting high torque from pneumatic and cordless impact drivers The GearWrench 84930N 12 Piece 1 2 Inch Drive Metric Standard Impact Socket Set is an industrial grade impact socket kit forged from Chrome Molybdenum (Cr Mo) alloy steel