Many Proxxon tools such as 28440, 28481, 28485, 28500, 28510, 28620 are designed for collets, held and clamped by a collet nut. These tools do not have a sufficiently long threaded spindle to accept the Proxxon MICROMOT chuck 28941 and allow it to close fully.
For this reason we also offer the 3.2mm chuck, which has a smaller body diameter which fits inside the nose shroud of 28440, 28481, 28485, 28620, 28500, 28510.
Diameter range 0.3mm - 3.2mm
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