Impact Resistance----These screwdriver bits are designed to withstand high impact forces. This is important when they are used with tools such as impact drivers, which create sudden and powerful rotational impacts. The shock-resistant design helps prevent the bit from breaking or being damaged in such conditions.Non-Slip Serrated Blade----The screwdriver bit has a non-slip serrated blade. This design helps clamp the screw more effectively and reduces the possibility of the screwdriver slipping out of the screw head during operation. This is important to maintain a secure grip and prevent damage to the screws or work surface.Deep Bite Design----The deep bite design of the screwdriver bits allows them to engage deeper with the screw head. By providing a stronger connection between the drill bit and screw, you reduce the chance of head slippage and increase overall work efficiency.Hardness 62HRC----The drill bit hardness is specified to be equal to or greater than 62HRC. This high hardness level indicates that the drill bit material has been optimized for durability and can withstand considerable wear and stress without deformation or damage.Mechanical Principle Design----Screwdriver heads are designed with mechanical principles in mind. This includes considerations such as torque and impact. The design is designed to ensure that when the impact driver engages the screw head, some of the impact reaction force is absorbed by the torque, which helps prevent the drill bit from breaking.SpecificationsSize: 25mm,50mm,65mm,70mm,90mm,150mmColor: Black, PurpleMaterial: D1 High Alloy SteelOther: with magneticPackage includes:1 * 6 Pcs Upgraded High Hardness And Strong Magnetic Bit