This is a set of simple and practical 3D models of bolts and nuts, featuring a classic hexagonal design. Their blue color is eye-catching and gives them an industrial look. The bolts have fine threads that fit perfectly with the nuts, making them ideal for mechanical assembly, teaching demonstrations, or DIY projects. The models have clear structures and realistic details, and they work well with various 3D printing materials to produce high-precision outputs. Whether you need them for prototyping or as decorative items, this set can meet your creative needs.