ITEM NAME:540 Motor Radiator Cooling Heat Sink for 545 550 3650 3660 3670 RC Car Boats Description: RC Car 1:10 Tram 540 Motor Radiator Cooling Heat Sink for 540 545 550 Brushed Motor 3650 3660 3670 brushless Motor RC Car Boat HSP HPI Wltoys ZDRacing For 1/10 RC racing car, 36mm diameter motor Easy to install Material: Aluminium alloy Color: Blue Size Chart: Size: Approx. 47 x 36 x 32mm/ 1.85 x 1.41 x 1.25inch Package Includes: 1 Piece 540 Motor Radiator.RC Car 1:10 Tram 540 Motor Radiator Cooling Heat Sink for 540 545 550 Brushed Motor 3650 3660 3670 brushless Motor RC Car Boat HSP HPI Wltoys ZDRacing. 1 Piece 540 Motor Radiator. Color: Blue. Size: Approx.