The scale of the picture is very deceptive. The metal body of the bit is less than 1.5 inches wide. These are very small pieces. The sizes seem correct. The bits are a little loose in the holders. One fell out of the package during shipping. Be careful with them as the size can be easily damaged. Keep them sorted carefully or you'll have to use a micrometer to put them in order. These bits are designed for use with very small vices.