If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Diamond Coring Drill Tool Size and Set Common specifications of diamond coring drill bits (Zoll): 2 4 5 6 7 8 10 12 inches, usw. Common specifications of diamond coring drill bits (mm): 110mm, 110mm, 117mm, 120mm, 125mm, 127mm, 130mm, 150mm, 160mm, 180mm, 200mm, usw. *Subject: *Your Name: *Email: *Phone: Whatsapp: Company: Country: *Content: Einreichen Δ