The \"Magnetic Project Mat\" Is a magnetic field mat, which during the work on electronic devices clearly fixes metallic small parts in place to prevent loss. On the erasable surface notes can also be made ensuring you put everything back in the correct way.. The extrastar magnetic core is safe for hard disks and other electronic components, while the non-magnetic, non-slip reverse side is made of special foam material. Technical details:- Material: plastic, foam, metal- Dimensions: 25.4 x 20.32 x 0.25 cm (L x W x H)