D miningwell Small Hole Drill Bits 32mm 34mm 36mm 38mm 40mm 42mm taper button bits mining rock drill bits

We manufacture various tapered button bits in different degrees as below:
Bit diameter: 26mm to 60mm;
Tapered degree: 4°46’, 6°, 7°, 11°, 12°;
Shank sizes: Hex. 19mm, Hex, 22mm and Hex. 25mm;
Carbide type: Chisel type, Cross type, Button type.
Qty of button: 5, 7, 8 pcs

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