• Dimensions (inches): The document lists various models of round base magnets with their respective dimensions in inches. Key dimensions include diameter (D), height (H), and two additional measurements (d1, d2). The weight in grams and magnetic force in pounds are also provided for each model.
• Dimensions (mm): The same models are listed with dimensions converted to millimeters, maintaining the same order and providing equivalent specifications.

The document offers customization options for round base magnets, indicating that special sizes can be produced according to customer requirements.

Contact details for Magengine Co., Ltd. are provided, including phone, fax, email, and physical address in Beijing, China.