Koken 16425 Impact Internal Torx Socket 3 4"Dr E26 Chippers Useful for both alignment and Rolling Seat Useful for both alignment and for measurement purposes Mitutoyo proprietary new design permits smooth pointer operation Flat crystal makes graduations easy to read Strong frame provides excellent rigidity and durability Non magnetic pointer and contact point permit reliable operation even in magnetic environments Clear and concise wide dial face allows excellent visibility The surface of the crystal is hard coated for excellent scratch resistance O ring protection guarding against oil and water penetration It can be used to contour pipes and profile irregular surfaces prior to the application of UCC Petrolatum Tapes Most Dependable ability to transfer greater torque