The BlueSpot 31 Piece Precision Screwdriver Set is manufactured from chrome vanadium for increased durability. Ideal for use by hobbyists and professionals. Supplied in a handy carrying case for quick and convenient storage. Contains: 4 x Phillips Bits: PH00, PH0, PH1, PH2.8 x TORX Bits: TX4, TX5, TX6, TX7, TX8, TX10, TX15 and TX20.7 x Hex Bits: 1, 1.3, 1.5, 2, 2.5, 3, 4mm.6 x Slotted Bits: 1.5, 2, 2.5, 3, 3.5, 4mm.1 x Tri-Wing Bit: 3mm, 1 x Triangle Bit: 3mm.1 x Spanner Bit: 2.6mm, 1 x Star Bit: 2mm.1 x Point Bit: 1mm.1 x Stubby Aluminium Screwdriver Handle.Additional Information:• Head Type: SL/PH• Tip Size: Mixed Set