designed for a very long life >High on durability >Tracking stability >Self-cleaning >End-to-end quality Silent system V6 Full extension concealed drawer runner for wooden drawer with silent250mm to 550mm Quadro V6 with silent system/concealed runner/undermount drawer slides/condealed slidesProducts Specifications:Norminal length :250,300,350,400,450,500,550mmEB: 22mm application for 16mm ...