BT-A Drill (STS Deep Hole Drilling) The BT-A Drill is compatible with standard BTA-STS (Boring Trepanning Association) Systems. Double effective cutting allows up to 2x penetration rate over conventional BTA heads.AdvantagesIncreased penetration ratesReplaceable cutting edgesLower cost-per-holeImproved performance in cross holesFeaturesDouble effective cuttingLaser clad bearing areaUses standard BTA-STS tube connection Contact Me สอบถามเพิ่มเติมที่บริษัท เพรสซิชั่น ทูลลิ่ง เซอร์วิส จำกัดTel. 02-3704900 auto 10 linesEmail : info@ptsc.co.th