Slide rail life: YENUO slide rail opening and closing test 100000 times. The service life is 30 years. Side mounted: the installation space on both sides of the drawer must be 12.7mm 20.5 inch 2 Length: 14inch 350mm. Suitable for long cabinet depths of 14-16 inches-Load bearing: 68 kg / 150 lb Detachable three-section full pull: Detachable internal guide rail to remove the tool from the drawer fully extended noiseless ball bearing drawer slide rail. Smooth and silent: rubber cushion cushion avoid pushing and pulling collision during use reduce noiseAttention: the mounting brackets and screws are not included YENUO heavy drawer slide. Technical details: 1. Very sturdy version-each pair can hold up to 150 pounds 2. Material: high gloss galvanized metal 3. Drawer slide rails with balls can realize smooth and silent opening and closing 4. High quality-three-section fully extended heavy drawer slides such as slides used for heavy drawers in the machinery industry Specification: Color: white Material: Cold rolled steel Material thickness: 1.51.51.5 mm Height: 50.5mm Width: 12.7 mm The length shown refers to the closed state of the drawer slide. The extended length is twice the closed length. Note: Mounting brackets and screws are not included.