851/1 RDC bits

High quality bits for drywall screws. Reduced shaft diameter for low-lying screw connections. Countersinking of screws without any surface damage. Especially for drywall construction. The diamond coating of the bits ensures a secure fit in the screw, reduces the contact pressure required and lowers the risk of slipping. 1/4" hexagon, suitable for holders as per DIN ISO 1173-D 6.3.