This is the best black valve marker ever made, even better than the Burner in my opinion. The ink flow is ridiculous, I haven't had it streak AT ALL yet. Even on metal surfaces where the paint is somewhat rough and faded, it still glides on super smooth without even the slightest hint of a streak. This is the Holy Grail of all 15-20mm valve markers. I would give this a higher rating than 5 stars if it were possible.
Dope product, writes smoothly and drips nicely. Super thin lines for super thin styles.. body isn't too sqeezable, meaning that if something spooks you in the middle of a tag and you squeeze really hard it's not going to pour out. stains really well, decent amount of colours to choose from. and the best part, it writes on literally ANYTHING. that's a freakin' awesome bonus! gotta be a little careful with the small metal head, it can break if you push down too hard. also, it's slightly expensive if you ask me, I'd price it at like $6.50 instead of $8.50. THESE ARE REFILLABLE! all colours are opaque and very vibrant. small, concealable, perfect for hitting quick tags with nobody noticing. A+