This is a grip/holder for 8th generation basic kindle. This grip can serve as a stand as well. For other kindle models, one might need to scale it to fit. You can find the dimension of your kindle model on Amazon. The size of the 8th gen kindle is 6.3"x 4.5” x 0.36” (160 mm x 115 mm x 9.1 mm) (height x width x thickness). The knuckle was remixed from https://www.thingiverse.com/thing:2613173. The holder was remixed from https://www.printables.com/model/63495-kindle-grip-10th-gen-v1. Update May 30, 2022: added a 80% knuckle for small hands. Update the socket holder to make the socket less protruding.