867/1 BDC SB TORX® bits, TX 20 x 25 mmBits for recessed TORX® screws with tiny diamond particles on the bit tip. This ensures a secure fit of the bit in the screw, reduces the contact pressure required and lowers the risk of slipping. Come with a Torsion zone where kinetic energy is diverted from peak loads. This greatly extends the product service life. hexagon, suitable for holders as per DIN ISO 1173-D 6.3.