10 piece 50mm PH1, 2 x PH2, PH3, PZ1, 3 x PZ2 and 2 x PZ3 SabreCut Magnetic Impact Driver Bits with size marked storage sleeve. SabreCut Revolution professional quality Mix (PH PZ) 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 in a handy carabiner clip size marked storage sleeve.