Yanran High Hardness Tungsten Steel Alloy Four-Flute King Drill Bit for Cement Wall Metal Wood [10mm*1 Piece] + Storage Box

High hardness tungsten steel alloy drill bit with four-blade cutting head

High-speed drilling, twice as fast as ordinary drill bits

High-temperature quenching forging process for enhanced hardness and wear resistance

Spiral chip removal groove for efficient debris evacuation and prevention of clogging

Anti-slip hexagonal shank design for secure grip and stable operation

Suitable for wet drilling to improve performance and reduce heat, especially on glazed tiles, ceramics, marble, and glass

Durable and sharp, capable of drilling over 300 holes without damage

Compatible with electric drills, lithium battery drills, impact drills, and bench drills (Note: Not recommended for lithium drills below 24V due to insufficient power)

For high hardness materials, use water cooling during drilling to prevent overheating and damage