Specification:

Size: Ring 50-10x12.5 N35
Outer Dia: 50 mm
Inner Dia: 10 mm
Thickness: 12.5 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.