Set of magnets They are identical, thats why they clamp with the slot at opposite side. They have static clamping force between them around 2.5Kg ( 5.5lb) The dimensions are shown at photo: Tolerance of drawing is +/-0.2mm The items are painted. Although the paint has some signs of wear and rust between. Set weighs ~160gr ( 42oz ). Glad to know, what use did you find for the pieces. Returns accepted.