Pilot Super Color Gold and Silver Markers offer brilliant, opaque, permanent marking on almost any surface. Xylene-free ink. SCG Gold and SCS Silver models in a variety of tip sizes:
SCGEF and SCSEF Extra-Fine Bullet Tip gives 0.5mm line.
SCGF and SCSF Fine Bullet Tip gives 1.0mm line.
SCGM and SCSM Medium Bullet Tip gives 2.0mm line.
SCGB and SCSB Broad Chisel Tip gives 2.0mm-4.0mm lines.

Note on operation: Shake several times, then press the tip down 3 or 4 times on scrap paper to start the ink flowing. Cap the pen tightly and store horizontally.