The bottles sit snug in this 3d printed (PLA) holder. This is for all us modelers who like to tip over our bottles of Tamiya Extra Thin! We've all done it! Ruined our cutting mats, rugs, model parts, blah, blah, bla. But, with this little bottle holder for made specifically for Tamiya or AK Interactive glues, you can stop the bottle from tipping over.