The Magnetic Arm is covered with non-scratch felt on both sides and features excellent magnetic holding power. The arm has a mounting bracket for attaching to the Double Motor Hanger. It can also be installed on two other component support rods that are great for users who already own a motor hanger, work with micromotors and other non-flex shaft tools, or just want and need a method to get organized. Please Note - this arm can magnetize tools. Burs and accessories shown in photo not included. The Magnetic Arm swings 180º horizontally to keep accessories within reach, or stored out of the way when not needed. Arm: 12 long x 1/2 wide x 1-1/2 high (30cm x 1.2cm x 3.7cm).