Sollroc DHD340 115mm Down The Hole Water Well Drilling Bit

DHD340 115mm Down The Hole Water Well Drilling Bit Specification: Bit Diameter: 115mm 4 1/2'' flushing hole (No.* Button Dia.mm): 2*18 No.* Button Dia. mm: Gauge Buttons 7*14mm + Front Buttons 7*13mm Weight (kg): 7.8 Advantages: 1.Smooth performance and long service life of DTH drill bits due to high quality alloy steel materials and advanced processing technology adapted. 2.Low problem rate and easy to maintenance due to simple , reliable and easy assemble and disassemble inner structure of DTH drill bits. 3..Easy to depart the dth bit from hammer due to multi—head thread connecting chuck and cylinder of hammer.