High Speed SteelMade of HSS cobalt material, the drill bit is hard enough, anti-bending and will not fracture easily. The surface coating can better protect the drill bit sets from corrosion and expand their longlife.
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TA-VIGOR 2pcs 7mm Straight Shank Twist Drill Bit, High Speed Steel M35 Cobalt…
High Speed SteelMade of HSS cobalt material, the drill bit is hard enough, anti-bending and will not fracture easily. The surface coating can better protect the drill bit sets from corrosion and expand their longlife.
TA-VIGOR 12mm Straight Shank Twist Drill Bit, High Speed Steel M35 Cobalt Twi…
High Speed SteelMade of HSS cobalt material, the drill bit is hard enough, anti-bending and will not fracture easily. The surface coating can better protect the drill bit sets from corrosion and expand their longlife.