The Grace USA Gunsmith 26 Piece Magnetic Tip Screwdriver Set is made specifically for the gunsmith trade. The high quality set includes eleven Grace USA Parallel Hollow Ground slotted bits that are designed the way they should be. Each one is precisely made so the bit portion that fills the slot of each gun screw is parallel the depth of the slot until the Hollow Ground takes effect giving the right radius for optimum strength. Each bit is made to the dimensions gunsmiths have found to be most useful which are .025 X 120, .025 X .200, .030 X .270, .031 X .150, .033 X .190, .038 X .200, .041 X .270, .045 X .240, .050 X .310, .070 X .350, .070 X .420. The set also includes three Phillips bits #0, #1, #2, eight Hex bits 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16" and two Torx bits T-10 and T-15. All bits are made of S-2 Tool Steel and properly hardened for strength and durability. Each bit fits snugly in Grace's spi...