Ikea Ivar shelf - old model - metal pins for shelf board holder

Hello, I am looking for the article number of the old Ivar shelf AND the number of the metal pins. Can someone help me? Also, does anyone have experience with the non-original metal pins/metal rods that can be bought on Ebay or Amazon? Thank you very much for the help in advance!

Hello, which one is THE old one?

If the pin has a diameter of 6 mm, then it has the spare part number 101324.

By old model I meant the shelves with metal strips. So also metal pins for holding the shelves. Currently, Ikea only has pins made of wood.

Is this the article number for the metal version?

Article numbers:

101324 is a 40 mm long metal pin with a diameter of 6 mm.

Thank you very much!