Technic Brick 1x2 with Joint Socket

LEGO® Technic Brick 1x2 with Rotation Joint Socket (80431)

This modified Technic brick combines compact structure with functional flexibility. Featuring a 1x2 base and a rotation joint socket on top, it’s essential for advanced Technic mechanisms, mechs, or custom vehicles requiring articulated movement.

Product Features

• Part ID: 80431
• Technic brick with rotation joint socket
• Size: 1 x 2 x 1 1/3
• Compatible with Technic rotation ball joints and axles
• Color options available

Suggested Build Ideas

• Use in custom LEGO® mechs to allow shoulder or hip movement.
• Incorporate into construction vehicles for moving arms or pivoting elements.
• Ideal for robot arms, transforming vehicles, or articulated creatures.

Browse all LEGO® Technic parts

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