Collet knob for Round shaft 3/8 in (9.525 mm) - 4 sizes 20/25/30/36 mm, no supports

Collar at the bottom, waisted, knurled head - the tall shape from valve radios. Sits high enough to reach past a recessed panel. 3/8 inch is 9.525 mm, the shaft size on American valves and older machine tools. Built on the exact conversion, not rounded to 9.5. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 20 mm | 21.6 mm | 3.9 cm³ | 4.9 g | | 25 mm | 21.6 mm | 5.5 cm³ | 7.0 g | | 30 mm | 22.2 mm | 5.2 cm³ | 6.6…

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