We always attach great importance to our customers. Please feel free to contact us If you find any defects on the product.This Screwdrivers Sockets Set is the necessary tool for various types of electrical work or other repair work. No matter if you are performing electrical repairs or just daily repairs, in general this set is a must have for any handyman or electricians tool box.SPECIFICATIONS:Material: PP + Chrome-vanadium SteelSet Includes:--Phillips Bits: PH0, PH1, PH2; PH000, PH00, PH0, PH1--Slotted Bits: 3, 5, 6; 1.0, 1.5, 2.0, 2.5, 3.0, 4.0--Hex Bits: H4, H5, H6; 0.9, 1.5, 2.0--Torx Bits: T10, T15, T20, T25, T30; T4, T5, T6, T7, T8, T10; 0.8, 1.2--Y-shape Bits: 2, 3--U-shape Bits: 6; 2.6--Pozi Bit: Pz2--Triangle Bit: 2.3--Socket: 6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm; 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5Bits Length: Approx. 2.4cm / 0.9in; 2.7cm / 1.1inSockets Length: Approx. 2cm / 0.8in; 2.7cm / 1.1inHandle Length: Approx. 11.5cm / 4.5in; 14.3cm / 5.6inExtension Rods Length: Approx. 12.9cm / 5.1in; 11.8cm / 4.6inCase Size: Approx. 19.5 * 16.4 * 5cm / 7.7 * 6.5 * 2inPackage Weight: Approx. 787g / 27.8ozPACKAGE INCLUDES:41 x Bits16 x Sockets2 x Extension Rods1 x Socket Extensions2 x Handles1 x Case