These shower curtain gliders from Spirella are compatible with the Surprise shower curtain rail from Spirella. Thanks to a clever click system, it offers an elegant and simple solution for hanging your shower curtain. The replacement set includes five curtain gliders that can be easily integrated into the rail. To do this, remove the end cap of the curtain rail, slide in the curtain gliders, and put the end cap back on. Set includes 5 pieces.