These dot markers are similar to Kuretake Zig Clean Color marker, brights 6 pack. The dot end seems identical. The key difference is the ink. These markers will bleed through 120 gsm paper on one press.
The fine tip end is thinner than the Kuretake, more like a 0.4 mm tip. They write really well and smoothly. For the price of about $20, they can't be beat and I think they are the best offering in the cheaper brands. I looked at Ohuhu and NiArt too.