This Robotic kit consists of:2 layered acrylic chassis4 Gear Motors.4 Compatible wheels1 Battery holder (4 x AA batteries, not included)Screw and supportive parts set.DC motor specification:Rated Voltage: 3-12 V DC.Unloaded speed: 120 RPM.Load current: 190 mA (250 mA MAX).maximum torque: 800 gf. Cm min.Wheel specification:Width:30mmDiameter:65mm
