Check the listing for details. Green Left and Right Knob Replacements for Hermes 3000 Portable Typewriters. Condition: New. Listed at 39.96 USD. This listing is for both left and right Hermes green 3D printed knobs. Very close to the original size, color and fit. The machine in the photos is a 1967 Hermes 3000. The individual knobs are also available in other listings in my shop. And also available in white. Does not include the metal insert. You will have to insert your original metal neck into the knob. It fits fairly tight and may need a few drops of superglue to fully secure If you do not have the metal insert this will not work for you. I personally designed this and 3D printed to be as close to the original as possible. The light green color is probably as close to the original as you will find for a replica. I have been working on typewriters for over 5 years and it can be frustrating to see the original knobs on these beautiful machines broken or cracked so easily. This is a great replacement to the original and is very strong and durable!