download this hook trigger keychain model and you can print on 3d printer , this hook trigger keychain and also use in other 3ds work . this models is rigged. i make this specially for 3d print . no need to more adjustments just download and print on 3d printer. you can also use this hook trigger keychain in all type of animated Projects. i have upload all format like stl ,obj , mtl , max , etc.if you need any other format or need any changing in this , you can ask me for that change , I will happy to improve that.