Four Pieces large Ceramic Coil Former with fixing nuts and washers

Overall length 54mm - height above chassis 43.5mm

The winding area is 20.5mm x 12.7mm diameter 

The former has two fibreglass collars with silver plated brass solder terminals

Each former has a adjustable Red coloured core fitted, which I believe indicates a recommended operating frequency range of 1 to 20 Mhz

I will include an additional spare "Blue" core for each former which I think is recommended for use 40-300 MHz

These are old stock so the solder terminals and brass fittings are tarnished