This BLX85 fan keeps your ESC running cool when conditions get hot or when you are doing extreme high speed running.Features:Super-tough composite material for long-lasting durability and premium performance in all conditions - Easy to fit for fast and efficient vehicle servicing Compatible with #AR390229 Dimensions: Length - 25mm Width - 25mm Height - 10mm Distance between screw mounting holes - 20mm Plug Type - JR 3-pinIncludes:1 x BLX85 fan 4 x M2.6 x 15mm button head screw