Pica INK deep-hole-marker Marks on all kinds of surfaces espacially those hard to reach Convenient quiver-cap with special clip for perfect one-hand-handling Permanent ink removable with alcohol and other usable solvents Extended nib made of stainless steel - self-adjusting and patented: up to 3 times more marking capacity by using the 7 mm of the fiber-tip´s length of abrasion instead of 2mm color: black