This pen is a creative adaptation of the famous 3D model of a movable Tyrannosaurus Rex, a flexible and adorable dinosaur that has conquered the world of 3D printing. The adaptation involves adding a pen to the dinosaur's head, making it an original and practical accessory. You can use this pen to write, draw

You need to buy a Bic Cristal pen, remove the refill from it, and then insert it into the pen immediately after the printing is completed.

If you want to make your own movable Tyrannosaurus Rex model, you might find the STEP files here very useful:

https://makerworld.com/it/models/488604-step-file-flexi-rex-with-stronger-links-not-stl#profileId-1231711

All my movable Tyrannosaurus Rex-themed model kits:

https://makerworld.com/it/models/771482-flexi-reindeer-rex-sleigh-santa-claus#profileId-707421 

https://makerworld.com/it/models/1926379-flexi-rex-tractor#profileId-2067504

https://makerworld.com/it/models/642988-flexi-rex-beer#profileId-568996

https://makerworld.com/it/models/636010-flexi-rex-pumpkin#profileId-561348

https://makerworld.com/it/models/389655-easter-egg-flexi-rex-baby-rex-mother-s-day#profileId-494232

https://makerworld.com/it/models/389625-easter-egg-flexi-rex#profileId-1231770

https://makerworld.com/it/models/1926424-flexi-rex-doorstop#profileId-2067552

https://makerworld.com/en/models/2558893-flexi-rex-for-pencil#profileId-2819227 

All my other pen designs:

https://makerworld.com/en/models/2558893-flexi-rex-for-pencil#profileId-2819227 

https://makerworld.com/en/models/2054914-dragonball-goku-pen-bic-v3#profileId-2218184

https://makerworld.com/en/models/2054880-dragonball-goku-pen-bic-v2#profileId-2218144

https://makerworld.com/en/models/2054847-dragonball-goku-pen-bic-v1#profileId-2218103

https://makerworld.com/en/models/1900323-little-wolf-pen#profileId-2036559

https://makerworld.com/en/models/1900311-flamingo-pen#profileId-2036543

https://makerworld.com/en/models/1900296-little-dragon-pen#profileId-2036518

https://makerworld.com/en/models/1900288-pig-pen#profileId-2036506

https://makerworld.com/en/models/1900272-shark-pen-v3#profileId-2036481

https://makerworld.com/en/models/1900265-shark-pen-v2#profileId-2036470

https://makerworld.com/en/models/1900252-shark-pen-v1#profileId-2036455

https://makerworld.com/en/models/1855772-beer-mug-pen#profileId-1984316

https://makerworld.com/en/models/1855700-spider-pen#profileId-1984234

https://makerworld.com/en/models/1855597-bat-pen#profileId-1984107

https://makerworld.com/en/models/1855588-flexi-bat-pen#profileId-1984092

https://makerworld.com/en/models/1855534-pumpkin-pen#profileId-1984037

https://makerworld.com/en/models/587799-tractor-pen#profileId-509035

https://makerworld.com/en/models/581155-flexi-rex-pen#profileId-502128

https://makerworld.com/en/models/580162-beehive-pen-hexagon#profileId-500995

https://makerworld.com/en/models/516724-deathly-hallows-pen#profileId-810023