12 Pcs Heavy S2 Steel Screwdriver Bits Set For Home Repair ✔️ S2 steel ensures durability with 100mm length and anti rust finish This tool collection handles fastening jobs across residential workshops or auto repair shops easily ✅ Four flat head sizes included for different standard screw sizes ✅ Eight Phillips drive options available for secure fastening and grip ✅ All bits feature 100 millimeter length for deep access reach ✅ Sandblasted surface finish provides extra protection against rust and corrosion 💡 Why do professionals prefer S2 alloy steel material over carbon steel for durable bits Most builders pick this grade for superior toughness and impact resistance in real world use. - Higher carbon content prevents edge rounding under rotational pressure during work - Tempered material resists cracking when driving stubborn screws tight into wood - Extended lifespan delivers reliable cuts through tough hardwood and metal ✝️