Wera 30 Piece Bit-Check Rapidaptor Stainless Steel Screwdriver Bit Set 071109 Model: 056440 This superb kit from Wera contains;Rapidaptor Universal bit holder with quick-release chuck.1x PH1, 3x PH2, 1x PH3;2x PZ1, 3x PZ2, 1x PZ3;Hex: 1x 2.5mm, 1 x 3.0mm, 1 x 4.0mm, 1x 5.0mm, 1x 5.5mm;Torx: 2x TX10, 2X TX15, 3x TX20, 3x TX25, 2x TX30, 1x TX40Features;Wera Stainless tools prevent rust on stainless steel fixings caused by contamination from conventional steel tools.Vacuum ice-hardened to the same strength as conventional steel tools, and so suitable for tough, industrial use.Wera Stainless bits feature a unique Torsion zone, extending bit life over standard bits.Stainless Rapidaptor feastures the unique auto-bit lock system, for quick and easy one-hand bit change.Bits manufactured from 100% stainless steel, yet as strong as conventional steel bits. Ideal for industrial applications.Prevents extraneous rust forming on stainless steel fastenings due to contamination.With Torsion technology for improved bit life.