Gas spring adjustable length and adjustable length column for chairs and tables with gas spring adjustable length.

A gas spring longitudinally adjustable showing a housing (1), the edge (57) on the side of occurrence of the piston rod protrudes freely. EDGE (57) engageable FORM widely as possible in a tube (66) SUPPORT a housing (1) arranged in an adjustable COLUMN lengthwise with an element (79) buffer that is on the bar (8) PISTON AND WHERE AT LEAST PARTIALLY SHAPE WIDER possible from the housing (1) APPLIED IN THE TUBE (69) SUPPORT SERVE IN ADDITION TO THE GUIDE IN A CAP (70) tube guide (69) support.