What are the sizes of a bridge horseshoe magnets?

The width refers to the distance between the two widest points of the bridge horseshoe magnet. The width ranges from 22.2mm (0.88″) to 30mm (1.18″). 

A large width is useful for clamping two large pieces of steel together, whereas a small width would be more suited to holding thin pieces of steel. This is because the larger the width, the greater the surface area of magnet is available to hold the large pieces of steel together.

The height refers to how tall the magnet is and ranges from 11.1mm (0.44″) to 19.8mm (0.78″). The height of the bridge horseshoe magnet will not affect your choice of horseshoe magnet, as it changes with the width and depth, which are more significant when it comes to selecting the size of bridge horseshoe magnet.

The depth ranges from 7.9mm (0.31″) to 19.8mm (0.78″). 

In terms of how thick the bridge horseshoe magnet is, the thinner the magnet, the less material it can hold. If you need to hold two large pieces of steel for welding, then a thick bridge horseshoe magnet would be more beneficial, this is because it will have a greater surface area for the magnet to grip onto the steel.

The distance between the magnetic poles of a bridge horseshoe magnet is always 6.4mm (0.25″).

The magnetic pull ranges from 0.9kg (1.98lb) to 1.3kg (2.65lb).