Features:* 11pcs 1/4" Hex Driver Hex Shank / Allen Precision Drill Bits Metric sizes 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm, 6mm, 8mm, 10mm, 12mm.* Bits have experienced twist and hardness test. The test results show that the maximum torsional force of the bits is 180-200N, and the hardness of the bits is 57-59HRC. High twist and proper hardness prevent bits from cracking and wear.* Made from S2 steel in a glossy, rust-resistant finish with marked size marks and magnetic tips.* 4 wings provide fast and clean cutting of your design material, perfect for projects of any level of complexity* Ideal for working on vehicles, bicycles and furniture. Assembly/repair of furniture in an easy way. Specifications:* Item Name: Allen Wrench Drill Bit Set * Material: S2 Steel * Shank: 1/4 Inch Hex Head * Color: Red Bronze (As Pictures Show)* Full Length: 65mm (Approx.) * Head Diameter: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm,6mm, 8mm, 10mm, 12mm * Quantity: 11pcsPackage Contents:11 * Screwdriver BitNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.