DeFelsko HHDSPRING14 - Rolling Spring Coil
Steel pipe electrodes - assorted sizes available: 10 to 60 cm (4 - 24") Rolling springs include two pre-installed spring couplers.
Note: Each spring includes two pre-installed spring couplers. A spring connector (HHDCONNECT) is required to attach the PosiTest HHD to the spring couplers. Custom sizes and bulk pricing are available. Additional couplers (HHDCOUPLER - 2 pack) are available.