This equipment had a structure to choke a condemned by tying a rope around his nape of neck, then setting heavy stones corresponding to 20 kan (unit of volume, approx.3.75 kg) (about 75 kg) at the end of the rope.
この器具は死刑囚のうなじに縄をかけ、その縄の先に20貫（約75Kg）の重石を吊り下げて絞首する仕組みであった。