Suitable for hot & cold water pipes including central heating whether they are made from metal or plastic, Can be used with central heating, Finished in grey these durable clips are so easy to use, Kitemarked BS 7291 parts 1 & 2 Class S, WRAS Approved, There is a hole in the top of the clip with a nail part inserted, for easy secure installation, The nail is suitable for use on plaster, brick & wooden walls, It is recommended that a distance of between clips is 400 to 500mm is used to achieve the correct amount of support, Simply push the clip over the pipe in the correct location & using a hammer fix the nail into the required surface, Pipes are held securely against flat surfaces for a neat professional finish