Screwdriver tip is made of reinforced S2 tool steel - This 1.5mm motherboard screwdriver bit can remove over 2500 screws without damage. Exclusively for professional electronics specialist - Integrated design of screwdriver bit and handle. Aluminum alloy handle and swivel cap with decompression - Bigger body, better grip. Detachable strong magnetic ring - For temporary storage of screws etc. JAKEMY professional screwdriver is guaranteed for 365-days, please contact our selling team for a perfect solution anytime due to product use or quality issues.