Specifications: Material:Cold-rolled steel;  Width:27mm/1";  Length:250mm/10inch,300mm/12inch,350mm/14inch,400mm/16inch,450mm/18inch,500mm/20inch;     Description: This full extension telescopic drawer slides equipped with high quality ball bearing with excellent workmanship enable quiet and ultra smooth sliding.Industrial standard 27mm Width (around 1") guarantees real 100 LB rated capacity.Side mounting and 27mm groove mounting can be selected with length ranging from 10" to 20" ideal for filing cabinets, desk pedestals and general storage drawers usage.     Features: * High quality ball bearing with excellent workmanship makes quiet and ultra smooth travel.  * 2 folds structure really full extension.  * Telescopic slides design length ranging from 10" to 20" compatible for most drawers.  * The 27mm Width (around 1") slides industrial standard width guarantees real 100 LB rated capacity.  * Side mounting and 27mm groove mounting can be selected.  * Ideal for filing cabinets, desk pedestals and general storage drawers usage.     Package included: 2 X Full Extension Telescopic Metal Ball Bearing Drawer Slides