These miniatures are in 28mm scale and were designed by  Fantasy world miniatures for games like Stargrave, Starsaga, Starfinder, Zona Alfa and 40k
 
This set contains
X2 XL Alien bugs D, 2nd picture is for scale. These Bugs are approximately L60mm by H46mm W53mm
 
They come in ABS like resin resin.
 
Please note 3D printer resin is not like the Resin used to make injection moulded miniatures it is denser and there for can be a little more brittle.
 
This set is supplied un-painted and some clean up may be required.