These isotropic ferrite disc magnets are magnetised multipole on one face. They can be easily bonded in place with a variety of adhesives and are especially suitable for attaching to thin sheet metal surfaces. Maximum operating temperature: 180 degree These isotropic ferrite disc magnets are magnetised multipole on one face. They can be easily bonded in place with a variety of adhesives and are especially suitable for attaching to thin sheet metal surfaces. Maximum operating temperature: 180 degree