TAMIYA 15399 MULTI BRAKE SET MS CHASSIS - Parts to which the sponge sheet is affixed are attached to the bottom of the car body. Sponge contacts the road surface with lane change, slope, etc. and brakes the machine to prevent the course out. Two kinds of heights for small diameter tire and large diameter tire can be chosen, sponge set of 2 kinds with different hardness. The brake surface consists of four parts to be assembled and two kinds of hexagonal shafts, and various settings are possible. - Set two kinds of sponges with different hardness TAMIYA ORIGINAL