IMPACT SOCKET: 21MM X 1/2″ DRIVE

* Topline Impact Socket Series are designed by professional for professionals * Each socket begins as a raw Chromium Vanadium or Chromoly Alloy Steel Rod * Each piece is expertly cut down into the required length and diameter blank slug * Utilizing the Cold Forging technique, the sockets are formed at room temperature into its basic form whether 6 point or 12 point * Depending on the socket series, we treat our sockets with anti-corrosive treatments to increase the longevity and strength of our sockets, so you can count on consistent and reliable performance from all of our sockets * Our Impact Socket Series undergoes Black Oxide Treatment, giving it a matte finish with anti-corrosive properties *