This drawer slide make of high quality steel, painted by automatic painting system. NO.602 Euro self-closing type drawer slide1. Size from 250mm-600mm (10"-24")2. Thickness 0.8mm, 0.9mm,1.0mm, 1.1mm, 1.2mm after painting.3. Color: White, black, brown4. Wheel: ABS or POM Drawer Slide