All parts are available are changable in execution and material:
star knob screws / star knob nuts / knurled head screws / knurled head nuts / wing screws / wing nuts / cross grip screws / ball knobs / height adjuster / adjustable feet / articulated plates / levelling feet / mounting feet / end caps / slip-on-caps / thread protection caps / cover caps / tube cap / ribbed plugs / felt glides / protection plugs and caps / distance rings / distance bushes / rosettes and caps for screws / connecting elements / threaded bushes and inserts / plastic screws and nuts / bumpers and buffers