This is the FXR 35T Pro Crawler Combo Set from Tekin Racing. FFEATURES:T35 Pro motor provides high torque and smooth throttle response Handwound and pro-tuned for competition level performance ESC has flash-programmable microcontrollers, cutoff for LiPo batteries, small footprint, anti drag, on-board programmable and temperature indicator INCLUDES: 35T Pro Competition Crawler Motor with FX-R ESC and instruction manual REQUIRES: Installation in vehicle SPECS: Motor: Can Diameter: 36mm (1.4") Can Length: 52.8mm (2.08") Shaft Diameter: 3mm (0.12") Shaft Length: 11mm (0.43") ESC: Input Voltage: 4-9 cells, 2-3S Lipo Motor Limit: 12 turn BEC: 6 volts/3 Amps Dimensions: 1.1"x 0.8"x 0.4" (28x 20x 10mm) Controls: Fwd/Brk/Rev cnh 3/30/09 ir/jxs