9 Pcs Alloy Steel Head Screwdriver Bits 25/50/65/70/75/90/100/120/150mm Magnetic Screwdriver Bit Non-Slip Magnetic Screwdriver Bit for Impact Drills/Screwdrivers

9 sizes for versatile coverage, accurately meeting various operational needs:9 stepped impact driver bits (25/30/40/50/60/70/90/100/150mm). The ultra-short 25mm model easily penetrates narrow spaces (such as electrical appliance control panels), while the long 150mm nozzle reaches deep holes (such as automotive air filter housings or the inside of PC cases). All compatible with impact drills, electric screwdrivers and standard hand drills (6mm hex shank, 90% compatibility). Forged Alloy Steel Core, Extreme Torsion Resistance Without Breaking: Magnetic Screwdriver Bit Made of forged alloy steel, providing 40% higher hardness and torsion resistance than conventional bits, without bending or chipping even under intense impact. Double Surface Protection: Anti-rust chrome layer + grey anti-oxidation coating, resistant to sweat, grease and damp environments (garages, cold rooms, etc.). Double Safety: Anti-slip grooves + magnetism, zero screw drop design: high magnetic force, holding the screws in place even when reversing or ceiling operations. Cross grooves precisely enclose the screw head, ideal for old or fragile screws. Each bit is engraved with its identification (e.g. "70L"), allowing quick recognition in 3 seconds and a gain in efficiency in tight spaces. Reinforced for impact tools, industrial durability guaranteed:Hex shank thickened to 6mm, compatible with high power power tools (impact drills, impact wrenches), reducing the risk of breakage. Withstands extreme temperatures, stable performance during repairs in cold room or overheated engine compartment. Solutions suitable for multiple sectors, increased efficiency by 50%: car garages: 150 mm long magnetic screwdriver bit + magnetism, removal of deep screws from the air filter housing in 10 seconds. Appliance Repair: Ultra-short 25mm tip for precisely unscrewing microscrews from microwaves or laptops, avoiding accidental contact with circuits.