-For use with the EGRD Ground Rod Driver -Inserts are interchangeable with standard ground rod driver bodyPart Number EGRD34I Ground Rod Diameter, Nominal 3/4" Ground Rod Diameter, Actual 0.68" Max Unit Weight 6 lb Certifications Qualifoudre Standard Packaging Quantity 1 pc UPC 78285635451 EAN-13 8711893017564