Etronix mini servo. Full selection on servo horns, mounting rubber and hardware included.

Spec Check:

• Speed (sec/60°): @6.0v 0.10s
• Torque (kg-cm): @6.0v 2.5kg
• Dimensions: 23.2 x 12.0 x 25.5mm
• Weight: 9.9g
• Gears: Metal
• Case: Plastic