JCM 105 Collar Leak Clamps provide a simple, quick solution to troublesome leaks in threaded joint steel pipe and PVC solvent weld pipe systems - without having to cut out fittings or modifying your system. This heavy duty clamp has many features which assure a successful repair, even under the most adverse conditions. Designed with an additional thickness of gasket in one end of the clamp to accommodate a coupling wall thickness greater than 5/32" and less than 5/16", the JCM 105 Collar Leak Clamp provides a convenient, economical repair to leaking solvent weld collar joints and is suitable for threaded coupling joints.