Plain Magnetic Strip Magnetic strips which are a flexible extrusion of Barium Ferrite, available in both plain and adhesive backed forms. The 'soft' nature of the material helps too prevent slippage on vertical surfaces. They are ideal for numerous applications including door closures and the retention of signs and placards.,The material can be cut and drilled, and the plain form may be easily secured using adhesive (not supplied). Pull force 65 g/cm²