Dremel 628 precision drill set
628 set lists seven bit diameters.
How to choose
Pick the kit by the hole diameter you need and verify the holder size for that bit. Check the case list rather than assuming all seven shanks are the same size.
Compatibility and limits
Seven precision twist-bit sizes · match the holder to each required shaft
Care
Before mounting the accessory, check its speed rating against the tool and use the holder specified for its shank or mandrel. Refer to the exact model instructions for the workpiece.
Questions before buying
Can I keep the same collet in place for all seven bits?
Compare the shaft of each bit with the holder specification. The Dremel 4486 chuck accepts a stated diameter range on compatible tools and can reduce collet changes.