Driving Stud
GRD-Q12
1/2
GRD-Q58
5/8 or M16
GRD-Q34
3/4
GRD-Q16
M18
GRD-Q18
M20
GRD-Q20
M22
GRD-Q22
M24
GRD-Q88
1 or M27
Used in the ground to protect ground rods while whacking ground rods
Ground rods Driving stud