The Tosaky Fuller is made of S-7 tool steel. It has a center line to help the user keep the cutting edge in the center when redressing the tool. Comes on a hickory handle that has been burned and oiled with linseed for the user.
Do you fuller with a left or right handed fuller?
If you pull the fuller towards you and hit it in line, then you use a left handed fuller.
If you fuller across your body at approximately at a 90° angle, then you use a right handed fuller.