
I don't know what the bits are made of but very soft. I needed T2 and T3 bits for a small repair that involved loosening and then re-tightening about 20 screws. I'm very careful with these very thin bits, they don't have much available surface area after all. However, despite my very (very) careful use, you can see that the bits are almost useless now. The edges are warped and the edges are badly damaged. I think I got what I paid for :)

Efficient Dusting Made Easy 🐾 with Anteater's Bellows Hand Duster BHD001
11 Review

STREBITO 142-Piece Electronics Precision Screwdriver Set: Repair iPhone, MacBook, Computer, Tablet, Xbox & More with Magnetic Bits
12 Review

ODISTAR Desktop Vacuum Cleaner: Mini Table Dust Sweeper for Keyboard/Home/School/Office 🖥️ - Cordless & Rotatable Design, High Endurance up to 90 mins (White)
12 Review

Efficient Desktop Vacuum Cleaner with Clean Brush Vacuum Nozzle - USB Charging, No Dead Angle Cleaning for Dust/Crumbs/Keyboard
11 Review

💻 Get Amazing Video Quality with Logitech HD Pro Webcam C920 (Discontinued Edition)
83 Review

🎥 Logitech C270 Webcam: Crystal Clear Video and Superior Quality
183 Review

Smartphone Samsung Galaxy A50 4/64 GB, 2 SIM, black
82 Review

Renewed Logitech G PRO X Wireless Lightspeed Gaming Headset with Blue VO!CE Mic Filter for Immersive Gaming Experience
122 Review