The Ultimate Magnets!
These are 3mm Diameter and 1 mm thick, and come in packs of 4.
Neodymium Iron Boron (NdFeB) is used to manufacture the most powerful magnets per unit volume that are commercially available today. These are great for when you need a small size and maximum power.
Neodymium (Rare Earth) Magnets exert very high forces and can attract each other through unbelievably large distances making them very popular for a wide range of applications from scientific experiments to magic acts!
They also have an immense and unbeatable resistance to being demagnetised, making them ideal for repulsion applications as well as attractive applications.
They are great for making your own pickups, or drops (i.e. Sew one into your lapel, and use it as a catch for any magneti items.