This is the classic and reliable Swann Morton Scalpel handle, size 4. It will fit the scalpel blades that are very useful for pairing paper and backing removal.
It has been covered in a hard-wearing upholstery cord to give it a comfortable handle to hold.
If you use one of these on a regular basis, you will appreciate the discomfort that can come from the metal handle with repetitive work, especially in leather and paper work. This handle cover is both hard wearing and comfortable at the same time.
It also looks super smart!
You can purchase the upholstery cord here, if you would like to re-cover your scraper or any other tools.
One of the images shows the regular size 3 handle for reference.