Electro-Technic manufactures four handheld models (BD-10, BD-40, BD-50, BD-60) and a customizable automated model (Model BD-65) to suit specific customer applications and test materials. Our introductory BD-10 model is intented for light/intermittent use while our BD-50/BD-60 models are more suited for continous heavy duty use. Our model BD-40 has a limited voltage output suited for thin/sensitive linings. Each model comes with a detachable pointed electrode tip. Other types of electrode accessories are available.