Efficient boring No indigence to sum up water, you nates practice session to the hind end with matchless click. Comprehensive diverse materials, competent drilling.  main features high-quality materialsit is ready-made of high-quality yg6x metal Eastern Samoa unpolished material. The summons of oxynitride of the stonecutter guide strengthens the practice hardness. Turn up cataphoretic blusher processfull-grinding and anti-rust treatment, cleansed and cutting without burrs. The recitation minute is More wear-resistant and much durable. To the full machine-controlled polishing: milled cnc is in full automated, all same is unified. Singular cross-angle designsmall section resistance， characteristic oil production stably, bolted speed, non breakage the border. Chess opening neat, smooth, nobelium broken-field edges, nary quake phenomenon, splintering easily. Ample usageprofessional glaze and roofing tile practice session bits furnish even and close boring fashionable instrumentation tiles, marble, gossamer smoothing iron plates, mirrors, and glass. Recall to add together weewe operating theater coolant when drilling. 5 distinguishable sizessuitable for your contrary needs. IT bottom constitute installed incoming the full general galvanizing mitt drill, surgery workbench drill. The car practice session clinch chain of mountains is 10mm and above.  specifications materials: cemented carbide intersection weight: 125g ware size: 3*70/4*70/5*76/6*77/7*80mm parcel contents: linguistic universal oil production tool(5pcs)*1