You can also get a single model for either arm found in the links below:
Star Wars Rogue One iPhone5 RIGHT ARM Gauntlet - https://www.cgtrader.com/3d-print-models/games-toys/toys/star-wars-rogue-one-iphone-right-arm-wrist-gauntlet
Star Wars Rogue One iPhone5 LEFT ARM Gauntlet - https://www.cgtrader.com/3d-print-models/games-toys/toys/star-wars-rogue-1-left-arm-wrist-gauntl