36 x 30 x 2 mm, three are used per group head on the E61 manual group, only two on the solenoid operated E61 type. A slightly smaller O.D. version (1 mm) is also available. Manufactured in paper as well.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.