TAMIYA 15390 FLUORINE COATED GEAR SHAFT (STRAIGHT 2PCS) [This is a useful part to improve the performance and set up the machine] The high-precision, high-hardness gear shafts finished by machining are plated with fluoropolymer with low friction resistance to create smooth movement. It can be used for some mini 4WDs, including the mini 4WD PRO. [Specs] Set of two gear shafts with a fuso coat TAMIYA ORIGINAL