Holbein pencils come in an impressive set of up to 150 colours.
They are reported to be a wax/oil blend and extremely soft and buttery. However they are also reported to be difficult to blend smoothly.
They are expensive in the UK and sets appear to be imported directly from Japan through Amazon.
We have no information on lightfastness or the availability of single replacement pencils.
We would appreciate it if you have tried these pencils if you would share your thoughts on how they perform.