As an Amazon Associate, we earn from qualifying purchases. Home » Hall Research » EX-HDU Hall Research . EX-HDU Hall Research . EX-HDU Gallery Attributes Brand name, Manufacturer name, ManufacturerHall Research Distributor offers SellerSKUMOQIn stockMultiplePrices AdoramaHREXHDU111 @ $541.50 primebuy.comEX-HDU1Contact Us11 @ $509.00