10 PCS Pack insulated magnetic Robertson Screwdriver Power Insert Bit No 1 BIT 4" LONG (No8 SCREW)

MAGNETIC Robertson Screwdriver Power Insert Bit #1 BIT 4" LONG (#8 SCREW)
1)provide maximum recess penetration
and “Cling Fit”
2) One PIECE MAGNETICS
3) screw drive bits are manufactured with tool-steel
4)Industrial grade bits
5)1/4" shank