size: as required, or follow to our standard size material: metal steel final finish: chrome plated, or power coating Color: silver, whiteSingle hook, size 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, 400mm.double hook, size 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, 400mm.hook's price tag provided double wire hook for shelving