spur gear 3d model

A precise 3D model of a small mechanical spur gear, isolated on a clean, solid neutral grey studio background. The gear is meticulously defined with exactly 42 cleanly formed, sharp plastic teeth around its perimeter. The body of the gear is made of matte, semi-translucent white nylon plastic. In the exact center, a highly polished, smooth cylindrical metallic steel axle pin completely penetrates the gear and protrudes straight out. On the main face of the gear, there is a distinct, raised circular plastic hub and sleeve flanking the central metal pin. The model must have clean geometry, perfectly symmetrical roundness, and sharp mechanical edges without any organic deformations or surrounding environment artifacts. Photorealistic PBR textures, industrial component style.