Fangrui Product Details 1. Floor Table Video Slider Track Dolly Car For Dslr Camera 2. Features 3. This Mini Desktop Camera Slider Car Will Be Very Helpful When You Want To Take Photos From Different Angle By Moving Your Camera 4. Main Body Is Made Of Metal, Sturdy Enough To Carry You Dv And Dslr Cameras. 5. Precision Extruded Industrial Grade Aluminum Construction. 6. High Quality Durable And Sealed Bearings On Both Sides Of Each Wheel. 7. Lightweight And Durable Construction. 8. Specifications 9. Material: Plastic + Aluminum 10. Compatible Camera Model: Universal 11. Socket Size: 14 Inch 12. Functions: This Dolly Car Can Help You Create More Dynamic Tabletop Shots 13. Features: Features 3 X 14 Screw Positions For Mounting An Optional Ball Head Or Articulating Arm Etc.; Constructed Of Aluminum With Roller-blade Style Wheels And Steel Ball-bearings; Front And Rear Wheels Adjust To Allow Straight Or Circular Movements And Glides 14. Size: 20 X 13.5 X 6.5cm