Are you looking for professional, yet periscope? Are you in search of sturdy, trustworthy tool that can do multiple jobs at once? Our professional periscope must meet you needs. It is for you. Features - Color: Black. - Material: Plastic. - Size: 29.50X5.50X4.00cm;/11.59X2.16X1.57in; - Made of good plastic materials, strong and excellent, practical and , can be used for long time - With easy-to-understand installation method, you can easily install it, bring much convenience to you - With rotatable design, it is convenient for you to rotate to different angles to observe objects - The light weight and detachable design make it easy to carry, portable and practical for outdoor activity - The periscope can be used in laboratories or physics classrooms, educational and funny Package list: 1 x DIY Homemade Periscope