【Fully Extended and Fixed】: The concealed runner glides adopts 3 fold fully extended design, which can pull out the entire length of the drawer, providing full access to the contents of the drawer, the end of the sliding rail is equipped with a rubber brake to prevent the sliding rail from opening automatically. Note: The slides are integrated and cannot be separated. 【Smooth and Silent Operation】: The soft close drawer slides are equipped with soft close mechanism that allow the drawers to automatically close slowly instead of slamming. Simply slide the drawer open and let it close the last centimeter slowly and without loud popping sound. The slow close function effectively reduces noise and ensuring the safety. 【Hidden Installation】: Provide a cleaner and efficient look that highlights your drawers without looking too large or bulky, and the guides are easy to hide. 1 pair of 8-24 inch drawer runners with soft-close adjustment at the bottom. ( it needs M4*15 self-tapping screw, which you need to buy yourself. recommend to wear gloves when installation) 【Steel Material】: The softclose slides glide rails are made of thick cold rolled steel plate with with galvanized surface and rust protection, thickness: 1.2mm, load: 20-30 kg (44-66 lbs), 1.7 times that of the normal slider, the drawer slide has been successfully opened and closed by testing. 【Wide Application】: Suitable for frameless cabinets and front frame cabinets, can be used in various household drawers and office furniture, such as kitchen drawers, bathroom drawers, wardrobe drawers, tool chest drawers, cabinet drawers, etc. Made from cold rolled steel with a zinc plated finish