Check the listing for details. Sirui MS18 Macro Focusing Rail. Condition: New. Listed at 88.00 USD. SIRUI Original Brand-New Dear customer, thank you for your visit.We are a professional photography accessories store with more than 10 years of operating experience.We are an authorized dealer of the factory,we never sell any form of fake and second hand goods, we are formal trustworthy shopOur store has a good after-sales service.If there are quality problems with the product, you can contact us at any time, we will solve the problem for you in the first time. The MS18 Macro Focusing Rail from Sirui is a precision linear motion lead screw focusing stage and rail, incorporating a camera platform with a rotating Arca-type quick release set. The rail has a capacity of 6.69" of travel distance, each full rotation of the crank providing 1.25mm of movement for precise camera positioning. The focusing knob has a crank handle that conveniently folds flat. The rail has a hollowed-out design to reduce weight, but it still maintains a robust 22 lb load capacity. The base of the rail features an Arca-type dovetail, making it easy to mount on compatible devices. It also has four removable, rubber-tipped feet for tabletop use.The camera platform has a locking lever and incorporates an Arca-type quick release clamp that can be quickly rotated into four positions in 90° increments. The included quick release plate has traction pads to resist movement between the plate and camera body. Key FeaturesLoad Capacity: 22 lb360° Rotating Head, Arca-Type QR ClampTravel Range: 6.69"1.25mm Per RevolutionCollapsible Crank Handle, Removable FeetT6061 Aluminum ConstructionLightweight, Hollowed Out ConstructionPrecision Number ScaleAdd Another Rail for Dual Axis Movement