The LEGO® Round 4 x 4 x 2/3 Dome Top with Hole (MPN 65138) is a shallow curved building element with four studs arranged around a central opening. Its smooth circular profile provides a rounded exterior while the structured underside supports secure integration into compact assemblies.
Curved Profile and Connection Details
This dome brick combines a 4 x 4 circular footprint with a low domed surface. Four exposed studs provide attachment points on top, while the central hole allows an additional element or axle-style connection to pass through the middle when the surrounding build permits.
Shallow circular dome measuring 4 x 4 studs.
Four top studs positioned around the centre.
Central opening through the upper surface.
Internal tubes and supports visible on the underside.
Notched lower edge for integration with surrounding elements.
Uses in Rounded and Detailed Builds
The curved shape is useful for roof sections, vehicle bodywork, rounded housings, mechanical details and decorative structures that require a smooth raised surface. Explore more LEGO® Round Bricks or view the more specific LEGO® Dome Bricks collection for related curved elements.
Choking Hazard: LEGO® pieces are not suitable for children under 3 years old due to small parts that may pose a choking risk.
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