You're looking at a quality wooden edge slicker made from quality lacquered pine, for burnishing the edges of your leather with three sizes. 

Great for slicking the edges of your leather work and also great for inside burnishing and moulding.

This quality pine tool is great for burnishing the flesh side of your leather or for slicking the edges of your leatherwork. Made in Japan by Seiwa, this polished wood burnisher is great for all kinds of leathercrafting applications.

Don't risk scraping your leather with imperfectly moulded plastic versions or ones that are made of softer woods that will get damages easily, use this Japanese made wood slicker for all your burnishing needs.