Ultimate Tube Marking Guide™

Take your rocket building skills to the next level with the Ultimate Tube Marking Guide™—the must-have tool for precision and accuracy. This heavy-duty, 18 in. long marking guide ensures straight, consistent lines for fin and launch lug placement, every single time. Whether you’re a first-time builder or a seasoned rocketeer, this tool makes setup faster, easier, and more reliable. Designed to work with all Estes body tubes, the Ultimate Tube Marking Guide™ eliminates guesswork and uneven fin placement. Its durable construction keeps your rocket aligned for optimal performance and stable flights. Just place your body tube into the guide, mark your lines, and you’re ready for perfect assembly. Heavy-duty 18 in. precision marking tool Ensures accurate and consistent fin and launch lug placement Works with all Estes body tubes—mini to large Eliminates guesswork for straighter, more reliable flights Durable plastic construction built to last through countless builds