Got some of these free today, at the shop. Someone took them off for city use a while back and found them on a cabinet. I put them on my bike, they're a little heavier than my $20 hardrock'rs I had before. 30 tpi. What. Are you kidding? The hardrockrs were 60.
They still have all the little hairs on them.
Any info on these? What they cost? Are they even worth keeping?