The Proaim 2ft Speed Rails is custom machined, corrosion-resistant, and multi-purpose. Allows you to capture on-location action and perfect smoothness, with minimum effort and maximum safety. These Scaffold Tubes mount over the Cars, Boats, Rail-compatible dollies, Tri-hats, or Camera Rickshaw carts. To rig your heavy Camera, Gimbal setup, Shock-Absorbing Arms, and others accessories. The Rails have thicker walls to increase durability and ensure maximum weight-bearing, yet it is drastically lighter than conventional steel rail. An outer rail diameter of 1-1/2" (48.3 mm) allows excellent tracking stability. Specifications Construction: High-grade Aluminum Diameter: 48.3mm Product Weight: 0.91kg/2.0lb What's in the box Proaim Speed Rail Ø 48mm x 2ft (SRBL-112-02)