Hi and welcome to my listing for a Sinclair C5 control box wiring grommet. This spaces out the wires running through the control box and stops them rubbing against the casing whilst also sealing the control box from the elements. 

This part is originally soft foam and easily damaged or lost. This is 3D printed in flexible TPU filament with bevelled edges to reduce rubbing. Fits very well and a perfect replacement for a hard to find part.

This is a replica part that I have designed and produced to be as close to the original as possible. This is 3D printed in flexible TPU filament.