Scorpion Hi-Speed Cooling Fan 30mm comes with the size 30 x 30 x 10mm that is suitable to Tribunus 06-80,Tribunus II 06-120, Tribunus II 12-80 and Tribunus II 12-130A ESC. - Aluminum case indeed is more durable but it could also use as a heatsink and with the high speed fan it can increase the cooling efficiency of the cooling system. - Useful accessory to reduces ESC or Motor temperatures! - 2-pin receiver connector plug for fast and easy connection! - Aluminum black color case with golden highlight to create a clean and strong look! Voltage: 7.2 V (Max.8.4 V) Speed: Reach up to 28000RPM SpecificationsLength : 30mm (1.18")Width : 30mm (1.18")Thickness : 10.6mm (0.42")Weight : 15.5gFan Speed 8.4V : 28000 RPMScorpion Hi-Speed Cooling Fan Alu (30mm)