Klein Tools 32807MAG 7-in-1 Multi-Bit Screwdriver / Nut Driver, MagneticThis Klein Screwdriver Nut Driver allows for one handed driving, with seven sizes in one tool Strong, Rare Earth magnets (1 4 Inch, 5 16 Inch, 11 32 Inch, 3 8 Inch, 1 2 Inch) securely hold nuts and bolts Spring coil (7 16 Inch, 9 16 Inch) holds nuts and bolts in place without the use of magnets Hollow shafts (1 4 Inch, 5 16 Inch, 3 8 Inch, 7 16 Inch, 9 16 Inch) for driving nuts deep onto bolts or threaded rod Heavy duty handle and shaft exceed the