1)material:cold-rolled steel2)apllcation:office funiture, kitchen cabinet & funiture drawer Telescopic channel(drawer slide) 1)material:cold-rolled steel 2)finish: zinc plated, black-painted 3)rated load:45kg/18'' 4)weight:72g/inch 5)installation method: side installation 6)dimension:10'', 12'', 14'', 16'', 18'', 20'', 22'', 24'', 26'', 28'', 30'', 32'', 36'' 7)application:office furniture, kitchen cabinet & home furniture drawer 8)feature:"32mm" hole series High precision steel ball assembly for smooth and silent rolling Hi-tech electroplating technology for rust resistance International advanced spray-paint technology. Full /half color package