- Marks on almost all kinds of dry surfaces.
- Convenient quiver cap with special clip for perfect one handed handling.
- Permanent ink, removable from glossy surfaces with alcohol and other usable solvents.
- Extended tip made of stainless steel.
- Self-adjusting and patented: up to 3 times more marking capacity by using full 7mm of the fiber nib's length of abrasion, instead of 2mm