Hi guys I am currently looking for 2 pieces of hardware, and trying to google search them has proved to be difficult.

The first component is a wheel that allows blades to be insert or removed from the unit.

The second component is a wheel with a brake attached to it.

Both parts need to be about 50mm in diameter, does anyone know where I might be able to find these parts as standard. The final image, shows both components in context. I would prefer to buy something off the shelf if this possible. As you can tell the unit is a chopping unit for fibre glass.

Regards