Use a core knocker to prevent hand injuries when trying to release core stuck in the inner tube. This sturdy accessory is made of steel and is built with an inner pin which, with the use of a mass, will free the core sample from the tube walls. Its dimensions are ideal to match the inner tube so that the core knocker will not move during usage, ensuring quicker results.
Core knockers are available in standard sizes and come in a 16’’ length. This safety tool is made out of high quality steel for a longer lifespan.