Application Ideal for cabinet, office units and storage drawers. Easy to Install: 1 pair of low noise drawer slides, including step-by-step instructions that make installation easier. Full extension: side ball bearing slides, full opening allowing access to the entire drawer. HIGH STRENGTH AND RUST RESISTANCE: Heavy duty drawer slides are made of high quality cold rolled steel with zinc plated, ensuring quality and longevity. Suitable for intensive use. Soft and Quiet: Double row of steel ball bearings that guarantee smooth and quiet performance. Featuring a soft close function to close any drawer smoothly and silently, creating a living environment silent for your family. Size: 310 (12 ") (L) * 17mm (W) Features: 1. High quality ball bearing with excellent finish for quiet and smooth sliding. 2. 2-ply structure. 3. 8 '' to 16 '' telescopic slides, compatible with most drawers. 4. The 17mm (approx 1.7cm) width of standard industrial width blades guarantees an actual rated capacity of 45.4kg. 5. Side mount and 17mm groove can be selected. 6. Ideal for cabinets, office units and storage drawers. Features: Material: cold rolled steel. Width: 17 mm. Length: 310 mm Weight: 232 g. Content: 2 ball bearing drawer slides.