Guitar AlNiCo material: alnico2/5 shape: block size: 2.5 ... uniform, excellent magnetic properties6.Application:Motors,Meters,Speakers,Sensors,Odometer,Guitar,Education,Odometer,sensor, telephone, mobile phone,etc.7. Magnetic ... Properties.Guitar pickups magnetic steel GradesSize(mm)LN10 LNG16 LNG12 LNG40D4.75 ... 12.7; 54.85×3.18×12.7 etc. Guitar AlNiCo