FOTGA DP500 II DSLR rail 15mm rod support system for follow focus and 5DII III D7000 D5100 D3000 dslr dv Measurements : Complete rail system is made of Metal. Color : knobs is blue and all other is black. Rails length : 250mm Rails dia : 15mm Rails center-to-center distance : 60mm Camera height riser adapters legth : 85mm Thickness of height riser adapters : 8mm Lens support length : 65mm Tripod mounting plate length : 80mm Tripod mounting plate thickness : 20mm Screws thread : 1/4 & 3/8 Features : Standard 15mm rails also advantageous for other 15mm accessory attachments Back and forth / side-to-side adjustments The height adjustments in all parts Camera Mounting plate, Lens Support and Riser is possible through Allen-key bolt mechanism The camera Riser for Vertical and Horizontal adjustments of the camera Quick Lock Mechanism makes easy and quick assembly of the system. The plate comes with both 1/4" and 3/8" camera mounting screws. Hence the large variety of Package including: DP500 II rod support X 1 (as pictures show)