Hotronix® Auto Open Clam Heat PressHotronix Auto Open Clam Heat Press The Auto Clam opens automatically when time is up, preventing over application and scorching, and allowing you to focus on more than one job at once. Three sizes available 16 x 20, 16 x 16, 11 x 15 Easy to read digital time, temperature, and pressure display for accurate, consistent printing Over the Center Pressure Adjustment for even, edge to edge heat and pressure, regardless of substrate thickness Wide opening