Keeps parts functioning properly adding life to your printer. No need for early fuser oil replacement thanks to its extended page yield of 500,000 feet for model 3835 and 800,000 feet for model 3900. Increased productivity by reducing paper jams. OEM quality for proven quality and peak performance. Contains: Fuser Oil; Page-Yield: N/A; Device Types: N/A; Supply Type: N/A.