Set of 10 magnets Size completed ring: 18mm OD x 14mm ID x 20mm Long Material: Neodymium (NdFeB). Grade: N45H Coating: Nickel (Ni) SKU# MMOT181420 OD = Outer Diameter ID = Inner Diameter N45 equals very strong magnetic material. The "H" represents a high heat rating. Standard neodymium magnets - those with no extra letter after the number rating - will produce their maximum strength up to 176 degrees F. Beyond 176, standard NdFeB magnets begin to lose strength. These N45H magnets will maintain full strength up to 248 degrees F - perfect for applications which require high heat tolerance - such as some motors. ASSEMBLY REQUIRED: These magnets will be sent as 8 arc segments - 4 with N Poles on the outer diameter and 4 with N Poles on the inner diameter. PLEASE NOTE: As with ALL neodymium magnets, these arc segments are very fragile. Therefore, 2 extra arc segments will be included with each lot purchased - one of each polarity. *** Please be careful when assembling.***
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