Ogeechee Extension Handle This special handle fastens to the Ogeechee™ core head only by means of the threaded hole on its top. A useful accessory for coring from a dock, boat, bridge - or just wading. 1.5 m (5’) handle has a threaded end to which you can add 1 or 2 additional extensions segments, each 1.5 m (5’) long with 1 to 2 included couplings.