JE Extension Pole with male and female ferrules provides additional length, extending workable height. The foam core prevents debris and moisture build up inside pole and adds extra hoop strength and rigidity. Jameson's original foam core pole is the highest quality fiberglass pole available. Meets requirements of OSHA Subpart R 1910.269 (j)(1)(i): Every JE series pole is tested to 100KV per foot for 5 minutes.