33pcs screwdriver bit set, including 1pcs connecting rod and 32pcs screwdriver bits, easy to operate and simple to use. Forged with 45 steel material, smooth and burr-free, with high hardness and toughness. Longer connecting rod, with magnetic inside the connecting rod, strong adsorption of the bit, making the connection more stable. Standard hexagonal opposite side 6.35MM (1/4" ) shank diameter, suitable for use on various tools such as electric/manual/pneumatic screwdrivers. Complete Specifications, a variety of Specifications can be used to meet diversified needs. Features: 33pcs screwdriver bit set, including 1pcs connecting rod and 32pcs screwdriver bits, easy to operate and simple to use. Bits are forged with 45 steel material, smooth and burr-free, with high hardness and toughness. Longer connecting rod, with magnetic inside the connecting rod, strong adsorption of the bit, making the connection more stable. Standard hexagonal opposite side 6.35MM (1/4" ) shank diameter, suitable for use on various tools such as electric/manual/pneumatic screwdrivers. Complete Specifications, a variety of Specifications can be used to meet diversified needs. Specifications: Name: 33pcs Screwdriver Bits Set Material: 45 Steel Type: solid bits set, hollow bits set (optional) Item size: 65 * 45 * 30mm / 6.55 * 1.77 * 1.18in Package size: 80 * 50 * 35mm / 3.15 * 1.97 * 1.38in Package weight: Solid bits set: 223g / 7.87ounce Hollow bits set: 220g / 7.76ounce Packing List: 1 * 33pcs Screwdriver Bits Set