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 (inch): 2 4 5 6 7 8 10 12 inches, etc. Common specifications of diamond coring drill bits (მმ): 110მმ, 110მმ, 117მმ, 120მმ, 125მმ, 127მმ, 130მმ, 150მმ, 160მმ, 180მმ, 200მმ, etc. *Subject: *Your Name: *ელ.ფოსტა: *ტელეფონი: WhatsApp: Company: Country: *Content: დამორჩილება Δ