This is the Castle Creations Mamba Max Pro Speed Control. FEATURES: ROAR legal for 1/10 scale applications Sensored and sensorless motor operating modes Handles up to 6S LiPo input Switching BEC provides power for servo and receiver all the way to 6S Profiles can be custom designed on a PC with the optional Castle Link PC programming software updt 3/23/10 Infinitely adjustable throttle and brake curves with timing advance Punch Control allows dialing in horsepower where needed Brake Strength allows straight tracking under hard braking Drag Brake helps entry into corners Start Power for smooth launches INCLUDES: Castle Creations Mamba Max Pro Electronic Speed Control with Cooling Fan and 4mm Bullet Connectors Two 3x6mm Cap Head Screws REQUIRES: Installing in vehicle SPECS: Cells: 6-12 NiCd/NiMH, 2-6 cell LiPo Brake: Proportional Reversible: Yes, with lockout Low Voltage Cut-off: Programmable Size: 45.5mm x 36.5 x 21.5mm (1.79"x1.44"x0.85") Weight: 81g (2.8oz) cnh 10/17/09 ir/jxs updt 3/23/10 kw