Slide-Co 161145 Bi-Fold Door Bot Pivot Hardware (1 Pack)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Steel and plastic construction</li><li>2-7/16" maximum extension</li><li>Plastic base measures 7/16 in. outside diameter， steel pivot measures 1/4 in. diameter</li><li>Used at bottoms of bi-fold panel door systems made by Johnson and others</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41SOD0%2BMDaL.jpg" noproxy>