1CNC machined from light weight aircraft-grade aluminum, sealing it against corrosion and abrasion. 2Standard dual dovetail design, with high contrast built-in bubble level to improve alignment 3Suitable for many traditional SLR cameras and digital SLR cameras macro photography 4Accurately find nodal point for panoramic photography, which can realize the maximization of seamless stitching of panoramic photography. 5Standard AS interface, compatible with ARCA-SWISS, RRS, MARKINS, KIRK, etc.Features:CNC machined from light weight aircraft-grade aluminum, sealing it against corrosion and abrasion. Standard dual dovetail design, with high contrast built-in bubble level to improve alignment Suitable for many traditional SLR cameras and digital SLR cameras macro photography Accurately find nodal point for panoramic photography, which can realize the maximization of seamless stitching of panoramic photography. Standard AS interface, compatible with ARCA-SWISS, RRS, MARKINS, KIRK, etc. Specification: Color: black Material: aluminum alloy Model: FNR-200 200mm Mounting screw: 1/4inch Dimensions: Approx. 23.1*3.9*1.9cm/9.1*1.5*0.7in Weight: Approx. 214gPackage List: 1 x FNR-200 Plate clamp 1 x Spanner