This is an exceptional magnet which uses a powerful Rare Earth Magnet within a mild steel casing. The Pot Magnet has a diameter of 32mm and a thickness of 8mm. This magnet has a countersunk hole with a diameter of 5.5mm and a super-strong pull force of 25KG and it only weighs 39 grams.
The magnet is very useful attached to the bottom of your pick.