Features:* new and high quality*Made of tremendous material, and realistic to use*Comes with screws.*Easy to float and clean.*Set of two Replacement Shower Door Rollers*Great substitute in your old/broken bathe door rollers.Specifications:Material: Brass centre, nylon outer wheel and stainless steel screw.Wheels approx: 20,23,25 & 27mm diameter.Applicable glass thickness: 4-8mmHole size within the glass: 6-8mm.Package Contents:2 *Shower Door Rollers2 *ScrewsNote:1. The real colour of the thing could also be slightly different from the photographs proven on web page caused by many points equivalent to brightness of your video display and light-weight brightness.2. Please enable slight handbook size deviation for the data.