Hexagon knob for Round shaft 4.0 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 4 mm shafts, held by an M3 grub screw. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 13.6 mm | 1.5 cm³ | 1.9 g | | 20 mm | 13.6 mm | 2.5 cm³ | 3.2 g | | 25 mm | 14.0 mm | 3.3 cm³ | 4.2 g | | 30 mm | 16.8 mm | 4.8 cm³ | 6.1 g | Bore measured on the finished solid: 4.20 × 4.20 mm. ## The fitting…

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