Specification:

Size: Ring  15-7x5 N35
Outer Dia: 15 mm
Inner Dia: 7 mm
Thickness: 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.