The PMT 1206-20 ER Neocerv MRI Head Blocks are designed for open back rings, offering a secure and comfortable fit for patients during MRI scans. Manufactured by PMT HALO SYSTEM ACCESSORIES in the United States, these head blocks are a reliable and high-quality product for medical and lab equipment. With a focus on patient comfort and imaging quality, these blocks provide a stable and secure position for the head during MRI procedures.