High quality HDMI 8K keystone jacks support 8K@60Hz and 4K@120Hz resolutions as specified in HDMI 2.1. Take advantage of the latest HDMI features including enhanced o Return Channel, Auto Low Latency Mode, Variable Refresh Rate for gaming, 5.1 and 7.1 surround sound, and object-based o with HDMI pass-through connectors. Quick connect installation with reusable keystone jack inserts that can be easily disconnected and relocated when upgrading or redecorating. Connect an HDMI 90 or 270 degree angle adapter to route cables in tight spaces. Cost-effective 2-pack provides a pair of HDMI inserts for connecting a video source and an HDTV with cables concealed behind the wall for a customized installation. Upgrade existing keystone jacks to 8K or add new connections to an existing setup. Commercial grade 8K HDMI 2.1 keystone jack insert provides a professional looking installation for home theater A/V configurations with a wall mounted HDTV. Connect a Blu-ray player, streaming video player, HDTV, projector, computer, or other device with the common HDMI port. Sturdy snap-in construction of female to female HDMI 2.1 coupler provides a secure connection. Vertically oriented keystone is compatible with a wall plate or patch panel (sold separately) with standard keystone jack blank openings.