GF904140 Magnetic Bases 40mm Round by Gale Force 9 Gale Force Nines Magnetic Basing System is the ultimate solution for your model basing needs. Each pack contains ready to use magnetic bases. Your forces will always be battle-ready, be it in their movement trays, display boards or army transport case. Every pre-sized base is a powerful magnet, topped with molded plastic. Simply mount your miniature as you would on any standard plastic base, paint and flock the base and your model is ready to take to the battlefield. The magnetic base will adhere to any ferrous surface and is strong enough to hold even metal models in place. A handy instruction sheet in each pack lists tips on how to best mount your models and basing materials on these fantastic bases. 9 - 40mm Roumd Magnetic Bases Includes basses only. does not come with flexable metal sheet.