4502 ball bearing slide drawer slide 1,Length:250mm ~ 500mm 2,Material:High tension cold-rolled plate Sepcification:Name:4502 full extension ball bearing slide,drawer slide,furniture drawer slide 1,Range to apply: office desk drawer,storage chest,cabinet 2,Features: long pulling journey,retarding device keeps the drawer from sliding out of control 3,Loading: 45 pounds(20kg)/group,(18"slide) 4, ...