Rails allow smooth 4-axis movements from left to right or front to back. Screw knobs enable fine adjustments along the scale to help achieve accurate camera positioning for macro photography, close-ups, and time-lapse videos. This black anodized focusing rail has a load capacity of 5.5 lb (2.5 kg) and weighs only 1.3 lb (570 g), offering easy portability. The quick release plate allows fast attachment of your camera to the rail and secures it with the clamp. The 1/4 inch-20 screw is compatible with DSLR cameras and other standard equipment. Mount the focusing rail to a tripod using the 1/4 inch-20 screw or an Arca-compatible base for stable support and flexible angle adjustments. Slight variations between production batches may occur but do not affect product functionality. Quick release plate: Arca-compatible. Color: Black. Material: Aluminum alloy. Package contents: 1 x Macro Focusing Rail Slider. Only the listed item is included; other items are not part of the package. Note: Lighting and display differences may cause slight variations in color between the image and the actual product. Measurement tolerances may vary by +/- 1–3 cm.