Ultimate Edition II Metal Steel Gearbox For 1/16 US M4A3 Sherman HengLong RC Tank H+L 49cm Short Axis Aluminum sheet is thickened and hard With Hight speed carbon brush motor wire for the motor including A full set of flange bearing 3 Black Steel Gear; 1 Driving shaft brass gear Motor Position: H+L; The drive shaft length: 8mm*49cm