DIMENSION: 2" dia. X1 2" THICK. TOLERANCE: +0.004"X+0.004" MATERIAL: NdFeB, Grade N52 PLATING COATING: Ni-CU-Ni ( NICKEL) WEIGHT: 6.810Z. (193G) MAGNETIZATION DIRECTION: Axial ( Poles on Flat ends) PULL FORCE: 130LBS SURFACE FIELD: 3309 GAUSS MAX OPERATING TEMP.: 176 oF(80 oC) Brmax: 14, 800 Gauss BHmax: 52 MG OE