20 piece 25mm PH2 (5) PZ2 (10) PZ3 (5) SabreCut Impact Driver Bits with Storage Box. SabreCut Extreme professional quality Mix (PH2 PZ2 PZ3) screwdriver bits specially designed for use with impact drivers, bits have forged tips for greater impact resistance and a longer lifetime. Tough heat-treated impact torsion screwdriver bits that provide improved durability and reduced breakage. Ideal for continuous high torque use withstanding changes of load due to elasticity. Professional quality impact driver bits supplied with storage box.