Suitable for wooden drawer boxes on cabinets and desks, these single extension drawer runners are designed to mount under the drawer and remain concealed from normal view., These runners are made from heavy gauge steel and feature nylon on steel mechanisms for smooth, silent operation. Capable of holding up to 30kg in weight, these Full extension runners allow the drawer to be Fully extended from the base unit. The integral soft close mechanism ensures the drawer closes softly and silently no matter how much force is used. These are premium quality, high performance drawer runners. These drawer runners require the separate right and left handed locking devices to operate correctly. They are available in 30KG and selected 50KG options. Sold in Pairs