Magnetic gunsmith level [Strong Magnetic]: Spirit level with magnetic base for secure holding ,it's gunsmith level tool. It contains 3pcs gunsmith bubble levels. [Simple to Use]: Just magnet on the bottom, it's gunsmith scope level. [Multiple Functions]: Mainly leveling your scope & at the same time. Besides, used for anything that you need a quick level for. [Durable & Fast Measurement]: Scope level made of acrylic and plastic which is durable, and fast measuring tool magnet on anything. Colour: black Material: acrylic + plastic Package Contents: 3 * Bubble level Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.