- These are used to press the header plate onto the core assembly. They come in a set of three, small, medium, and large. Machined to match your tube pattern, and end of tube to header plate dimension, to ensure consistent assembly of the header.
- They are made from aluminum, with a steel handle. The operator puts them onto the header plate and pounds them down until the tube hits bottom. Setting the header plate to the proper distance from the tube end.
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