Features: These screwdriver heads are designed to withstand high impact forces. This is important when using them with tools such as impact drivers, as impact drivers can sudden and powerful rotational impacts. The impact design helps to the drill bit from breaking or damaging in this situation. The screwdriver head has slip serrated blades. This design helps to clamp screws more effectively and reduces the possibility of the screwdriver slipping out of the screw head during operation. This is for maintaining firm grip and damage to screws or working surfaces. The deep design of the screwdriver head allows it to more deeply with the screw head. This can reduce the possibility of head sliding and improve overall work efficiency by providing connections between the drill bit and screws. Hardness ≥ 62HRC: The hardness of the drill head is specified to be to or greater than 6 A set equipped with 6 screwdriver heads of different lengths, fully suitable for all working environments Product Description: 1 set: 6 screwdriver heads Beautiful and practical generous, comfortable and durable, safe and reliable Unique design, do not follow the trend, which makes it useful and fashionable Easy to carry, easy to use, It can gives you a euphoric feeling Made of environmental friendly material, moisture-proof, non-toxic, non-irritating, soft and comfortable This is the best gift for family, friends and colleagues, I believe they will like it