Libra C Stud's are part of Libra's Stud & Track drywall partitioning system. 70mm upright studs for dry lining; used for internal non-load bearing partitions.Libra C Stud's are part of Libra's Stud & Track drywall partitioning system. 70mm upright studs for dry lining; used for internal non-load bearing partitions.