{"title":"Magnet Ring - 3/16","handle":"magnet-ring-3-16","url":"/products/magnet-ring-3-16","description":"These are small rare earth magnets - 3/16\" rings. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curiously strong and make for a great way to attach tools to a metal workbench, hold small children to a fridge, and as a trigger for reed switches. This one small ring can easily hold a piece of paper to your fridge.   We found these small rings to be very useful for connecting PCBs together. These rings are conductive and can act as a magnetic connector between widgets. You need a way to secure the ring to the PCB (screws and rivets have been shown to work).   Sold in single units.   Features:   Dimensions: 3/16\" od x 1/16\" id x 1/16\" thick Tolerances: ±0.002\" x ±0.002\" x ±0.002\" 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: 1.48 lbs! Surface Field: 2275 Gauss Brmax: 13,200 Gauss BHmax: 42 MGOe ","vendor":"SparkFun","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":637,"title":"Default Title","sku":"SF-COM-08914","price":2.17,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}