What chuck size is common for mini rotary tools?

For mini rotary tools, 2.35 mm (3/32 inch) is one of the most common collet sizes for precision applications such as engraving, jewelry polishing, model making, electronics repair, and nail work.

Other common sizes include:

2.35 mm / 3/32 inch: widely used for precision accessories

3.0 mm: used on some compact rotary tools

3.2 mm / 1/8 inch: common on larger hobby rotary tools and many general-purpose accessories

For a compact engraving pen or precision rotary tool, 2.35 mm is usually a good choice because there is a wide range of compatible grinding, polishing, engraving, sanding, and drilling accessories.

Buyers should also check whether the tool uses a fixed collet, interchangeable collets, or an adjustable chuck, because this determines which accessory shank sizes can be used.

ToolQeen rotary tool models commonly use a 2.35 mm collet, which is suitable for many precision rotary-tool accessories.

For OEM and ODM projects, ToolQeen can customize the collet size, accessory combination, motor, speed range, battery, housing, and packaging according to the target application.