If you have any questions about our products, please complete the form below. We will respond to your inquiries as soon as possible. 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, atbp. Common specifications of diamond coring drill bits (mm): 110mm, 110mm, 117mm, 120mm, 125mm, 127mm, 130mm, 150mm, 160mm, 180mm, 200mm, atbp. *Subject: *Ang Iyong Pangalan: *E-mail: *Telepono: WhatsApp: Kumpanya: Country: *Content: Isumite ang Δ