I just looked at Tox bit. Philips bit won't fit in Torx screw head. Philips 4 points, Torx 6 points. Flat screw bit may work if the size fits. But Torx screw heads come in more various sizes where flat screw much fewer sizes. In emergency situation, if you have to try something, you can try the size that you happen to have, but I'm not counting on it, if I'm the one in that situation. Also Torx screw are made for havier(tighter, higher torque) use, where flat blade screws are made for much lighter use. Flat screw bit to use on Torx screw head maybe usefull no better than having a hammer in the emergency case.