Two elongated baseball bats dominate the center of this technical patent drawing rendered in white linework against a dark charcoal ground, with detailed cross-sectional views and end-grain diagrams arranged to the right. The composition captures the precise, methodical language of early industrial artwork, using the austere palette and formal layout of vintage patent documentation to elevate a simple sporting tool into something worthy of scientific study. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.