Lynxmotionヘビーデューティメタルアームベース（サーボなし）

I used this to replace the bottom mount on a mechanical arm. The standard configuration had the whole arm mounted to a servo spindle. The arm rocked enough while turning the servo broke somehow and stopped working. This item supports great weight due to its bearing and support surrounding the servo. Highly recommended for supporting robotic arms and all objects that turn.

I use that metal kit for servo as a steering mechanisim of my 4 wheels drive robot vehicle. That kit is the center joint between the 2 sections of the vehicle. It increase the attachement to the servo and il will protect the top servo gear where we attached the metal kit. And again , delivered fast with an usual great service from RobotShop people.