Ecodora Hose Reels For AdBlue®/DEF. 544 Series. Specially designed for AdBlue®. Self retracting. For use in harsh or clean environments. Can be used with pumps up to 90L/min (20% flow restriction). Hose fitted is 16mm (5/8” bore) x 10m x 5/8" with 1" F ends. Includes extra mounting bracket for easier installation.