Nylon button glide. Installs into a 1/4" diameter hole on the bottom of a 1/2" or 3/4" door. Use 2 per door.

Black fibre track and glide for wood door thickness 1/2" and up. Self lubricating to glide smoothly and quietly. Long wearing, rust and corrosion proof, no moving parts to wear. ....

Aluminum track assembly for 1/4" thick glass door. Consists of: 1 - Upper guide, 2 - shoes, 1 - double track, 4 - rollers, 4 - clip guides, glazing vinyl and mounting screws.