Delta S R Lock Arca Rails are our new light weight design with chamfered corners on the leading plate edge and physical screw stops on each corner. Our new rails will have the R Lock rapid stop mounting system built into the rail to be used with an R Lock clamp head. These rails can still be used with any other Arca style clamp system as well.
Each Arca Swiss plate comes with (2) 10-32tpi button head bolts. Take a look at our hardware packs to help you mount your rail in a variety of ways.