Magma Dual Horizontal Round Rail Mount - Standard Rails [T10-580]Dual Horizontal Round Rail Mount Standard Rails Incredibly strong and rigid, these rail mounts will not slip on the rail. They have a unique pivoting design which allows them to attach to curved rails or across the corner of a stern rail. Made of 18 8 stainless steel and 356 hard anodized aluminum they instantly detach without tools for compact storage leaving no hardware on the rail. Fits rail size 7 8" to 1" (2. 22 x 2. 54 cm) Compatible With: Dual