Specification:

Size: Ring 23.5-9.2x2 N35
Outer Dia: 23.5 mm
Inner Dia: 9.2 mm
Thickness: 2 mm 
Grade: N35
Coating: Nickle - Ni  
Max Operating Temperature: 80°C  

Description:
Nickel Coated Magnets have many industrial, educational and household uses. These Magnets are highly resistant against demagnetization.