... ,Material:High tension cold-rolled plate Sepcification:Name:Ball bearing slide rail,drawer slide 1,Range to apply: office desk drawer,cabinet 2 ... out of control. 3,Loading: 55 pounds(25kg)/group,(16"slide). 4,Surface treatment: blue zinc,colorful zinc,black electricity coat ... ,please feel free to contact with us. 3504 ball bearing slide rail,drawer slide