Product description Delmhorst 26-ES 10 Shaft Slide Hammer Electrode. The 496contact pins that come with the 26-ES penetrate 1 1/8' and have insulatedshanks so that only the tips are exposed. The pins make contact only at theiruncoated tips and provide much more accurate readings of moisture content atvarious levels of penetration. This feature is useful for a variety ofdifferent applications: Flooring installers: Penetrate through flooring toplywood sub-floor, or concrete. Dry kiln operators: Identify moisturegradients which helps to identify the drying pattern. Furniture manufacturersand craftsmen: Easily check high density hardwood that short pins are unableto penetrate. From the Manufacturer Accessory for J-2000, J-Lite, J-4. Thestandard steel contact pins, 496, have insulated shanks so that moisturecontent is measured only at the points, which are not insulated. Theuninsulated tip area for measuremnt is approximately 3/16 in. Use the slidinghammer action to quickly measure moistrue at various levels of penetration.This is a sure way to identify a moisture gradient without cutting the wood.Maximum penitration of the 496 pins is 1-1/8 in. They can be used onsoftwoods and on hardwoods from 1/8 in. to 5 in.. thick or 6 in. diameter.