These are 1/72 Flat Head screws at 1/4" length. They fit perfectly in the TFX Chassis and also in Aurora Tjet and similar chassis that use the OS3 Lightning Rod Guide Pins. They are intended for aftermarket resin bodies and can also work on Autoworld bodies.
Advanced Slot Car Racing Oil
Free-jet is a low viscosity lubricant that yields extremely low surface friction. It has the highest lubricity of any light oil and is race proven and long lasting. It is plastic compatible, non-conductive, and is suitable for all chassis bearing points including the armature. It will not contaminate the brushes or foul the commutator.