To briefly explain how HDMI works please see the image below:
Yes, Twisted Veins Cables Support 4k resolution up to 60Hz. HDMI 2.0 to 2.0b are only available for all 1.5 ft. to 30 ft. Cables. As of January 2019, all of the Twisted Veins cables are [Premium High Speed with Ethernet] and so will support all HDMI standards up to and including HDMI 2.0B. If you have any trouble connecting any of the Twisted Veins cables with your 4K TV or Monitors, please contact us at firstname.lastname@example.org or through our Contact Us page and we will fix any problems you could encounter with our products.