Low density plastic flat rod assembly 3.0mm (1/8") x 10.0mm (3/8") x 350.0mm (14") with certified grade 200 miniature ball visibly enclosed at the end. The largest miniature ball that can be utilized is 3.00mm. Designed to be used to test metal detector pipeline systems between the pipe and aperture wall.
Each is Color-coded, imprinted with size, contaminant type, and Certificate of Compliance number. Certificates of Compliance are available free of charge.