The Master Lock 51 mm Portable Magnetic Case is used to keep keys in car, garage or any outdoor place. Case measuring 51 mm x 119 mm x 28 mm, suits most of the keys including an integrated fob key. Plastic construction of the case ensures added strength and prevents the inhibition of rust. Recessed magnet sticks to any steel surface. The enclosed design of the case hides the keys completely. Sliding cover with an integrated stop prevents the keys from being dropped or misplaced.