Size: Finishing:blue zinc-plated,color zinc-plated,black zinc-plated. Product features:spring-back positioning device,inseparable By installing fixing pieces,4different heights can be ed 62 to95mm. Installation method:top-mounting Recommended applications:light-loaded small cabinet,computer keyboard and any drawers withour side walls,or any applications requiring 25kg load or less and requiring 3/4 extension.