The 4 x 4 cylinder hemisphere (Part 86500) is a specialized rounded element used to create smooth, dome-like structures. It features a four-stud diameter base and a studless, hemispherical top. This part is commonly used as a rooftop dome for architectural builds, a nose cone for aircraft, or a protective cockpit casing for spacecraft. Its uniform curvature provides a clean finish to any project requiring rounded geometry.

Discover more in our Cylinder Pieces collection.

LEGO® parts are intended for builders aged 4 and up. They may pose a choking hazard for children under 3 years old.