1)Business Type: Manufacture and sale 2)Min. Order: 2000 pieces 3)Type:X,XX,EX,EXX,EC,ECC,ESF,ESSF,ESD,ESSD, ... ECC Tungsten carbide tri-cresent bit Φ51 ESF Cast/hardened button drill bit Φ51 Φ76 Φ100 ESSF Tungsten carbide ... Φ51 Φ76 Φ100 Φ120 ESD Cast/hardened button drill bit Φ115 ESSD Tungsten carbide button drill bit Φ115 Φ115 EY Hardened tri ...