Features: 15mm aluminum camera rods for secure extension and compatibility across DSLR rigs, shoulder mounts, and follow focusing systems. Features female threading for seamlessly rod connection and 6 lengths (10-50cm) to suit varied filming setups. for professional videographers, cinematographers, and content creators needing lightweight yet high strength support for camera cages, matte box, and rail accessories. Essential for studio, on location filming, and stabilizing shoulder mounted rigs or rail base camera trackings systems. Optimizes your gear with this 15mm rod system, engineered for precise alignment in follow focusing units, sliders bases, and handheld rig configurations. Specifications: Material: Aluminum Screw connectors: m-12 Threaded Diameter:about 1.50cm/0.59in Length:about 10cm/3.94in 20cm/ 7.87in 25cm/9.84in 35cm/13.78in 40cm/15.75in 50cm/19.7in Quantity: 2pcs Package Includes: 2PCS M-12 internal threaded aluminum Rods note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.