R311 - Neodymium Ring Magnet - 3/16" Dia x 1/16" ID x 1/16" Thi

• Dimensions: 3/16" od x 1/16" id x 1/16" thick
• Tolerances: ±0.004" x ±0.004" x ±0.004"
• Material: NdFeB, Grade N42
• Plating/Coating: Ni-Cu-Ni (Nickel)
• Magnetization Direction: Axial (Poles on Flat Ends)
• Weight: 0.00665 oz. (0.189 g)
• Pull Force, Case 1: 0.70 lbs
• Pull Force, Case 2: 1.75 lbs
• Max Operating Temp: 176ºF (80ºC)
• Brmax: 13,200 Gauss
• BHmax: 42 MGOe

These tiny rings can be incredibly useful. They can be used for small arts and crafts projects, science experiments and demonstrations, and pretty much anything else you can think of.