Every single workshop in the country needs at least one of these. a great way not to lose metal components especially screws. Also very handy when assembling furniture so you never lose sight of those fixings and fastenings. Brilliant when repair cars then soft base ensure it sticks magnetically to a surface but doesn't scratch. HIGH QUALITY - Manufactured from premium grade stainless steel STRONG MAGNET - Securely holds nuts, bolts & steel components SCRATCH PROOF BASE - soft non-marking base. This unit attaches itself with a strong grip to ferrous based metallic surfaces- the addition of the soft base reduces any damage to the surface when it adhering and when removing. GREAT FOR WORKSHOPS - Ideal for using onto ferrous surfaces such as tool racks etc LARGE SIZE - 150mm diameter of the bowl with a depth of 30mm