Hexagon knob for Round shaft 6.0 mm - 4 sizes 16/20/25/30 mm, no supports

Six flats instead of eight. Reads as a tool size and looks right next to anything held by hex screws. For plain 6 mm shafts without a flat. Holds with an M3 grub screw that cuts its own thread - no brass insert, no tapping. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 17.6 mm | 2.0 cm³ | 2.5 g | | 20 mm | 17.6 mm | 2.9 cm³ | 3.6 g | | 25 mm | 17.6 mm | 4.4 cm³ | 5.6 g | | 30 mm | 17.6 mm | 5.2 cm³ | 6.6…

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