Equipped with a 5/16"(8mm) diameter locating pin, these centres are used for accurately locating and driving items such as lamp columns which have already been partly bored through from one end. Where this centre differs from other such centres is that an additional boring head is available which allows more accurate efficient boring operations to be carried out. This is very useful when turning longer items that need to be made in more than one piece such as standard lamps or curtain poles etc.