66770 Type 340-A HSS Black Oxide 118Â degree Split Point NAS 907A Jobber Length Drill Bit (12 pack) 4.75" ID just has eccentric locking insert

just has eccentric locking insert instead of set screw

Fan Cooled: No

and is disassembled with ease

Service For Air Only

66770 Type 340-A HSS Black Oxide 118Â degree Split Point NAS 907A Jobber Length Drill Bit (12 pack) 4.75" ID just has eccentric locking insertType 340 A 118 split point is self centering for reduced thrust and easier penetration Black oxide finish for increased wear resistance and added lubricity Manufactured to NAS 907A aerospace specification General purpose geometry with 118 split point for drilling in a wide range of drilling operations and materials. Click Here for product catalog Proudly Manufactured in the U. S. A