... good quality and price 3)has strong magnetic force Large Ring magnet N35,N38,N40,N42,N45,N48,N50,N52(M,H ... magnet with different grades of: N35,N38,N40,N42,N45,N48,N50(M,H,SH,UH,EH) etc.2. Working temperature for Ring ... and with the most that wecan do for you.4, Samples are always available here, welcome your inquiry, thanks. N50 large ring magnet