Detailed Product Description drawer slide,soft-closingslide ,buffering slide, furniture hardwaresmaterials :ironwidth :17mm,45mmthickness:1.0*1.0color :black or white zincbe used for :box /file drawerextension:full extension length :10~24inchesdelivery time :15~20days features :metal ball retainer for smooth and quiet motion ,leave disconnect for easy drawer removal,selfadjust to side clearance . ...