Timber screws, also known as Timberlok Screws or Sleeper Screws are perfect for a large range of jobs. This product is fast becoming the landscaping industry's best friend! For fixing railway sleepers to large timbers to form raised plant beds and linking decking systems and installing posts. It offers first class fixings with no preperation, pre-drilling. Can also be used for tresses, shed frames and loft conversions.