Small steel noise reduction bearing: special bit! Magnesium silicon alloy with powerful magnet, new flagship quality screwdriver small steel. Six types of threads, designed for specific models, each appearance refined by maintenance technicians, durable and robust steel, full of strength. Noise-reducing bearing tested over 10,000 times, strictly controlled for quality, ensuring smooth rotation without sticking; rotational duration up to 1 minute. Super hard special bit, based on S2 steel, enhanced with chromium, molybdenum, tungsten, vanadium and other alloy elements to improve hardenability, toughness, wear resistance, and heat resistance. Ergonomic grip with improved look and feel, providing a comfortable disassembly experience. Color: Grey Material: Metal Package Contents: 6 x Screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowance is +/- 1-3 cm.