Down-hole Bit

Posted By jinquanrockdrillingtools -

China
Summary: dth bits pressure diameter ranges 66mm 205mm equip jq hammers shank drawing 76mm
Bimetal Hole Saw

Posted By alide00 -

China
Summary: 14 210mm sharp teeth suited multi drilling holes copper plate
Down The Hole Bits

Posted By jinquanrockdrillingtools -

China
Summary: hole bits manufacturer jinquan golden spring rock drilling tools