Material: Aluminum Alloy Adjusting Range: 115mm / 4.5in Load: max. 10kg / 22lb Item Weight: 292g / 10.3oz Package Size: 22 * 5.5 * 5cm / 8.7 * 2.2 * 2in. Package Weight: 330g / 11.6oz Model Number:W-160 Aluminum 2-Way Macro Focusing Rail Slider Plate CNC processing from solid aircraft-grade aluminum Color: black + red Precision focusing through a 110mm range Index Scale on both sides 48mm diameter metal thumbwheel with 1/4 inch-20 Screw. Arca/ compatible 55mm dovetail plate w 1/4 inch-20 threaded socket. Helping to achieve exacting camera-to-subject distance, the Macro Focusing Rail is a focusing stage offering fine- tuned control across a 115mm adjustment range The Rail is driven by a knob-controlled worm gear and index scales, in millimeters, are printed on both sides of the rail for consistency.. Cameras can be mounted on top of the rail via the integrated 1/4 inch screw, which uses a 48mm-diameter thumbwheel to secure cameras in place. 214mm overall length (including adjustment knob). Weight 293g (10.3oz). Package List: 1 * Rail Slider Plate Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours