The Leonardt DP40 is a pointed nib produced by Manuscript UK. It is largely thought of as a decorative nib with its fanciful electric blue hue. This is a pointed nib.
It is sometimes confused with Brause 361 'Blue Pumpkin', and is often thought of as a little more flexible.
You can use it directly with sumi ink, or prepare the nib before first use by washing with toothpaste or removing the wax using the flame of a lighter. The blue coating fades with use, don't be alarmed!