... -material: harden cold rolled steel -type: soft closing , full extension -length: 300,350,400,450,500,550mm-load capacity: 40KG-package ... : 4pairs/carton-fob shanghai: 4~7 usd/pc Length: 300mm, 350mm, 400mm, 450mm, 500mm, 550mmAdvantage:1.integrated damper ... the drawer softly,smoothly and stable when moved2.Hidden full extension slide,load 40KG3.Horizontal and vertical tolerance are ...