This is the On/Off Road Starter Box from RB Products.

FEATURES: Starts engines from .12 cu in (2.0cc) to .28 cu in (4.6cc)
          Designed for 1/10 and 1/8 scale on-road vehicles as well as off-road
            1/10 and 1/8 scale buggies and truggies
          Wheel position can be easily changed for on- or off-road applications
          770 size motor
          Anodized aluminum chassis
          90% pre-assembled

INCLUDES: On/Off Road Starter Box from RB Products with Instructions

REQUIRES: Two 7.2V NiMH stick packs or two 7.4V LiPo batteries

SPECS:    Dimensions: 14.2 x 5.5 x 4.6" (360 x 140 x 116mm)
          Weight: 56.44oz (1600g)