These quality pliers are designed to crimp UG, UR, UB and UY style connectors manufactured by 3M and others. Pliers are designed and manufactured in accordance with Bell Specifications. They feature a built-in side-cutter and coil spring. The built-in stop prevents damage to connectors. Vinyl handles.Use for pressing/crimping UR, UY, UG and UB style connectors.Also compatible with other telcom style splice connectors.