Retained tension metal locking tie and pneumatic hand tool

The present invention is directed to a metal locking tie and a metal locking tie tool. The metal locking tie has a tie body, a tie head secured to the tie body, and a roller means disposed in the tie head. The tie head has a bottom, a ceiling, opposing sides, a strap entrance end and a strap exit end that define a strap receiving passageway therethrough. The tie head also includes an angled tool bearing surface at the strap exit end. The metal locking tie tool includes a cutter cap with a cutter and a ball setter. Once the metal locking tie tool has tensioned the metal locking tie, the cutter moves linearly with respect to the cutter cap to set the roller means in the tie head and to provide a flush cut off of the excess tie body from the metal locking tie.