Delmhorst 21-E Electrode
21-E Roof, Insulation, EIFS Electrode, uses #608 pins for 3.25" penetration.
The 608 pins that come with the 21-E are insulated, except at the tips, and can reach a maximum penetration of 3-1/4".
Great for use on roofs, insulation, or EIFS.
21-E is also available as the 21-E/001 with 6" penetration