http://www.srfbits.comExport Departmentalice diiPhone: 86 - 0317 - 3223932/+86 - Fax: 86 - 317 - 3223932
fuyingmen 6 beihuan roadhejian, hebeiChina, 062450Web Page Link: https://www.toboc.com/hejianzhongchengdrillbitmanufacturecoltd
Cutting StructureThe durability of premium tungsten carbide insert is improved with new formulas and new techniques for insert bit.Gauge StructureMultiple gauge protection with gauge trimmers on the heel of cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capabi
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