3139 ESTES Centering Ring Aligner Tools

The Centering Ring Aligner Tools make one of the most detail critical steps in rocket building easier, cleaner, and more consistent. Designed to hold centering rings perfectly straight and flush on body tubes, these tools help builders achieve professional looking results with less effort and frustration.

From first builds to advanced custom projects, this 5 piece set removes the guesswork from alignment. Each aligner holds components steady during glue up while also doubling as a guide for tube marking and fin alignment.

• Precise Ring Alignment: Keeps centering rings level, perpendicular, and flush during assembly.
• Five Popular Sizes: Fits BT-5, BT-20, BT-50, HBT-1000, and 29 mm tubes.
• Multi Purpose Tool: Works great for tube marking, fin alignment, and other detailed layout tasks.
• Durable ABS Construction: Injection molded for strength, accuracy, and long term use.
• All Skill Levels: Ideal for beginner kits through expert level custom builds.