Gate Keeper Games

Gate Keeper Games publishes tabletop games and dice. Its Halfsies line presents two-color resin dice in polyhedral set formats, while its store also lists other dice lines and game products. A brand entry can therefore connect a recognizable visual construction to particular set formats without assuming that all Gate Keeper Games products use the same materials or manufacturing process. Claims about balance or roll performance require separate evidence.

Official company source: https://www.gatekeepergaming.com/about.php
Product source: https://www.gatekeepergaming.com/product/kings-halfsies-dice/