About this 3D model
These are 3d printed wheels for the 1/25 scale AMT monster truck tires. They use a 7mm hex that fits the HBX Devastator, as seen in this image. Theres a file for a single piece and also another set of files with the fake bead separate from ther wheel, so you can print a separate color for the bead if you have 2 print heads, as seen in this pic (green bead on black wheel).