ITEM NAME:Light shock absorbing tank chassis tracked vehicle suspension car chassis Description: Light shock absorbing tank chassis Tracked vehicle suspension Smart car chassis Robot accessories Features: Weight only 166g, good shock absorption, can be pressed down 0.7cm Simple mechanical structure and easy installation. Non-slip solid tires enables more powerful driving force. Support 3-7v voltage (you can replace other high quality motors of the same model) Specification: Size: width 9.7cm/3.82inch length 18.5cm/7.28inch height 5cm/1.97inch The motor is a universal 130 motor Package Includes: 1 Piece Light shock absorbing tank chassis.1 Piece Light shock absorbing tank chassis. Features: Weight only 166g, good shock absorption, can be pressed down 0.7cm.