Floating Ball Magnet: 1.Fast Delivery. 2.Mass Stock 3.Reasonable Price Floating Ball MagnetFloat Ball Size :29*12*11 We specialize of level sensors ,flow sensors ,approach sensors ,reed switch extra. Floating Ball MagnetFloat Ball Size :29*12*11mm (Outer Diameter ,Inner Diameter,Height)1>Mass production ,competitive price .2>Long life .3>Material :PP Foam Floating Ball Magnet