... EXX,EC,ECC,ESF,ESSF,ESD,ESSD,EY,EYY Dingrun High Quality Self-drilling Anchor Drill BitSpecification:1)It's the most ... R32L/N/S R38NR51L/N T76N/S X Forged cross-cut drill bit Φ42/51 Φ51 XX Two stage ... drill bit Φ110 Φ110 Φ130/Φ175/Φ200 EX Cast hardened cross-cut drill bit Φ42/51 Φ51/Φ76 Φ76/90 Φ ... 130 EXX Tungsten carbide cross-cut drill bit Φ42 Φ76 EC Hardened tri-crescent drill ...