4221 Technic Arm Grab Jaw

LEGO® part 4221 is a black Technic arm grab jaw with a long tapered body and three-pronged gripping end. Designed as a mechanical grab element, it is useful for creating articulated claws, grabbing mechanisms and moving machinery.

LEGO® Technic Grab Jaw

The moulded hinge connection allows the jaw to be incorporated into functional assemblies, while the curved prongs create the distinctive gripping shape. It is a useful replacement part for restoring compatible builds or experimenting with custom mechanical designs.

Explore more LEGO® Technic parts and pieces for mechanisms, machinery and custom Technic builds.