Delmhorst 2497/A-100 uninsulated pin and retainerUninsulated pin and retainer with 5/16" penetration. Standard on all meters with built-in pins and the 2-E and 4-E electrodes. Used on wood up to 6/4 (1 ½”), concrete and gypsum.Available Stock: 10MFG: DelmhorstDELM2497/A-100 $2.30 / EA Details...