Knurled knob for Square shaft 4.0 mm - 4 sizes 16/20/25/30 mm, no supports

Fine longitudinal knurling and a slightly domed top. The everyday knob: enough grip for a fingertip, quiet enough for a front panel. Square 4 mm, the size on small valves and furniture fittings. A square carries torque by shape, so this one does not rely on the grub screw. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 13.6 mm | 1.9 cm³ | 2.4 g | | 20 mm | 13.6 mm | 3.0 cm³ | 3.9 g | | 25 mm | 15.0 mm | 4…

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