as two colliding magnets will smash due to the strong magnetic field and the enormous attractive force

The magnet has 2 internal threads: one at the top and one at the side

Height: 10 mm

you might want to buy magnetic sheets for self-cutting instead

C-profiler, Magnetskilte 40x10 mm., 10-pak Auto-translated (EN) as two colliding magnets willOur smallest magnetic C profile of 40x10 mm. Use these magnetic profiles as storage rack shelf fronts, on filing cabinets, etc. The magnetic profiles are suitable for all magnetic surfaces (except glass boards). Complete with C profile, plug in paper card and protective plastic foil. Sold in packs of 10. Quantity discounts available. Width: 4 cm. Height: 1 cm. Colour: Dark grey. Strength: approx. 44 gr. sq. cm.