Min. Order Reference FOB Price
500 Pieces US$4.60 / Piece
Product Description
Produt Details Product Description Taper Drilling Rock Crown Button Bit and Drill String Steel Rod for Quarry Borehole in Granite Mining Site Product Characteristic: 1.Button bit taper angle: 7°,11°,12° 2.Length: 50/55/71/80 mm 3.Diameter: 30-42 mm 4.Button bit shape: ...