Estes 3139 Centering Ring Aligner Tools

The Centering Ring Aligner Tools are a must stock accessory for hobby shops and retailers looking to support builders with precision tools that improve results. Designed to simplify centering ring installation, this 5 piece set helps customers achieve cleaner builds while reducing frustration during assembly.

With compatibility across multiple tube sizes and added functionality for tube marking and fin alignment, these tools deliver strong cross sell potential alongside rocket kits, motor mounts, and building supplies.

• Broad Compatibility: Fits BT-5, BT-20, BT-50, HBT-1000, and 29 mm tubes.
• Multi Use Functionality: Ideal for centering ring alignment, tube marking, and fin layout.
• Appeals to All Skill Levels: Valuable for beginner kits through advanced custom builds.
• Durable Construction: Injection molded ABS plastic ensures long term reliability.