For Use With The TRAXXAS Velineon ® VXL-3s Electronic Speed Control (ESC); Reduces ESC Temperatures During Extended Operation For Maximum Power Flow; Installs Directly On ESC Heat Sink And Plugs Into The ESC; 1.56 Inch Length x 1.34 Inch Width x 0.83 Inch Height (With Clips); 0.47 Inch Height (Without Clips); Black And Blue; Single; With Instruction Sheet