A set which you can use the core sampler of the percussion drilling set with a thin PE foil liner. Over the years there where some remarks/complaints about the fact that it was a very difficult and elaborate job to get the sample out of the tube. This was only possible either by cutting or sawing. With the new system this transparent synthetic sampling tube is replaced by a long plastic foil. Benefits Foil insertion kit for core sampler Much lighter material Easy to remove foil Same results and not at least it is much cheaper Remarks The foil insertion kit can only be used in combination with the left hand threaded core sampler 63 mm in combination with RD32 couplings.