Delmhorst Pack of 4 Pins (3-1/4 inch Penetration) for the 21E
4 inch pins (pack of 4) for the 21E probe by Delmhorst. Used on insulation.
Standard on the #21-E, the #608 contact pins are insulated except at the tips. 4 inch overall length, 3 ¼ inch penetration.
Also available as #608/001. 7 inch overall length, penetration of 6 inches. Used on EIFS.