Short range gras caps

I would like to sell some caps for the short range gras cartridge.They are the 10 mm type.I have no idea of their value or their rarity.Could someone help me?

I can post a picture if needed


hi Pivi
put a picture please

I don’t think they are very valuable.Maybe 0,50 euros or so


Hi Pivi
If they are 6 mm diameter, they are indeed for Gras short range reductor.
The different lengths are :
11 mm
19 mm
23 mm
30 mm

Value : I used to sell them 1 Euro


OK,thank you.Yes they are 6 x 11 mm