The Bahco 66IM/54C-1 Impact Bit Set contains a wide selection of bits suitable for use with impact drivers and suitable for hard material applications. Designed for long-term use, the torsion zone can effectively spread the force concentration. Each bit is made from High performance alloy steel with a manganese phosphate finish. The torsion zone absorbs torque peaks and makes bits more resistant to sudden impacts, preventing premature tip breakage and improving service life.Supplied in a resistant glass fibre reinforced case. This patented case has a 180º locking function: case stays in open position even if turned [up to 500g of added weight] without closing on your fingers. Swivelling racks allow space optimization and easy access to the bits. The lid and body of the case can be split for flexible organizing in trolley drawer or toolkit.Sticker delivered within the set for personalisation and user identification.Contains:4 x 25mm Impact Phillips Bits: PH1, PH2(x2), PH3.4 x 25mm Impact Pozi Bits: PZ1, PZ2(x2), PZ3.13 x 25mm Impact TORX Bits: T10(x2), T15(x2), T20(x3), T25(x3), T30(x2), T40.7 x 25mm Impact TORX Tamper Bits: TR10, TR15, TR20(x2), TR25(x2), TR30.5 x 25mm Impact Hex Bits: 2, 2.5, 4, 5, 6mm.2 x 25mm Impact Robertson Bits: R1, R2.1 x 25mm Impact Slotted Bit: 5.5mm.4 x 50mm Impact Phillips Bits: PH1, PH2(x2), PH3.4 x 50mm Impact Pozi Bits: PZ1, PZ2(x2), PZ3.9 x 50mm Impact TORX Bits: T10, T15, T20(x2), T25(x2), T30(x2), T40.1 x 75mm Magnetic Quick Release Bit Holder with Lock in System.