This drawer track guide kit is constructed from yellow plastic. These guides and glides are designed to restore the smooth operation of your track mounted drawers. They come complete with fasteners for a quick and easy installation. Typically used is used with a 3/32 in. x 1-9/32 in. track. This track guide kit comes with 2 guides and 4 side saddles to help repair up to 2 drawers. This guides are constructed from plastic and is designed to mount on the rear of your drawer to make for a smoother operation.