FR-TH is for Inline or Pistol tools fastening in any direction, Vertical, Horizontal, side to side, up, down and any angle in between, without torque reaction or tool weight. With the FR-TH on an ETA torque arm the tool will stay suspended at any height you leave it, please note that the FR holder will not lock in position. It is designed to move 360 degrees fluidly and easily and stop all torque reaction from the tool. Because the FR-TH offers so much freedom of movement, when the operator lets go of the tool it may lay on its side, or flip up side down. This is a great tool holder when working at various angles but should not be the first choice if all fasteners are being driven downward (vertically) or sideways (horizontally). The FR-TH is not for use with right angle tools.