Min. Order Reference FOB Price
1 Piece US$3,590.00-3,949.00 / Piece
Product Description
Good Price DTH Hole Opener Enlarge Hole Drill Bit for Coal Mining Product Description KINGDRILLING DTH hole opener bits are manufactured from the highest quality aircraft alloy steel. Which are used to enlarge the size of a pilot hole most commonly for Blast hole drilling, Quarrying, DTH ...