with fixed knob in polyamide-steel composite (steel core knob with steel parts) for screwing without spindle connection to the lock nut, polyamide, surface high gloss, Button Model 138R, diameter 55 mm, height 54 mm, length 93 mm with neck diameter of 23 mm.
Concealed, non-loosening screwed joint with rose 305... Concealed, loosening screw with rose 305 ... diameter 55 mm, 10.5 mm high.
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