Professional Tungsten 5 in 1 Nail Drill Bits | Yellow (Extra Fine)Professional Nail Drill Bits: Nail drill bits are made of carbide material, the hardest metal in making drill bits, 3 32" size is suitable for most electric nail drills, this one piece high precision processing nail drill bit is less vibrating and more stable than ordinary splice drill bits, with good heat dissipation, low noise and wear resistance. (Color: Silver Quantity: 1 Grit: Coarse). 5 in 1 Functional Design: The multi functional design makes