25mm length (1 kg per bag)
When using nails to fix lead into place only copper or stainless steel nails should be used. These ensure security, longevity and compliancy with relevant guidelines.
These high-quality copper nails are specifically designed and manufactured to meet the requirements of British Standard BS-1202-1&2. This stipulates that nails should have shanks that are annular ring, helical ring or serrated and be no less than 20 mm in length.