... reasonable price soft closing & under mounted, full extension ball bearing slide ball bearing slide-material: harden cold rolled steel, DOMIXISA/K18, stainless ... : 300,350,400,450,500,550mm-package: 4pairs/carton Basic Data:Length: 300mm, 350mm, 400mm, 450mm, 500mm, 550mmload capacity:30 KGmaterial ...