GASP23 08/27/2019
I've only tried the purple.

It's a big huge alcohol based ink marker with a plastic body. I wasn't impressed by the purple ink. It's not very dark, it's not fade resistant, and it's not even remotely opaque. It isn't streaky. The plastic body is nice in some ways as it won't get dented like a metal body, and if you drop it, it's very quiet.

I would like to try it in black someday, I have a feeling it's better. I may try filling it with OTR hard to buff or something, because I do think the body and nib are totally fine.

to sum it up: Decent marker, lame ink. If it were an empty marker, I'd rate it higher.  2 of 5 Stars!
helpful?  yes - 1   no - 0 

No1youknow 05/23/2017
A little streaky at first but that was on cardboard so I tried it out on so plastic and it worked out great! I feel it's best on smooth surfaces  5 of 5 Stars!
helpful?  yes - 0   no - 0 

Question: refillable?
Answer:(AP Reply)Yes.