Shafts of high alloy nickel-chrome-molybdenum (SAE 8660) for maximum hardness and toughness. Chromed with brinelled tip. The ergonomically formed plastic handles are oil and impact resistant. The revolving top and finger mould improve ease of use.Slot: 1.0 x 50 - 2.0 x 50 - 3.0 x 50Phillips: PH 000 x 50, PH 0 x 50, PH 1 x 50TX: 5 x 50, 6 x 50, 8 x 50, 10 x 50, 15 x 50HX: 1.5 x 50, 2.0 x 50, 2.5 x 50, 3.0 x 50