Our range of NWL coring drill bits are made to the highest quality. Built to last, these Kestrel Standard bits are among the most popular bits that are used in the industry. The NWL core bits have an overall diameter of 75.7mm or 4 Inches, with a coring (inside) diameter of 47.6mm or 1.87 Inches. The sturdy barrel and decent sample size makes NWL one of the most popular forms of wireline core extraction. The sturdy barrel and decent sample size makes NWL one of the most popular forms of wireline core extraction.

The fact that these bits are Standard Wireline coring tools means they use Core Barrel Drill-Line Inner Tube Plastic Liner. When the clear plastic Liner is used (inserted) it will not contaminate the Core sample during drilling and encapsulation.