Plastic holding device with noise dampening

A plastic holding device for mounting a tubular member to a support and including a first outer shell formed from a hard rigid plastic and a second inner shell having a pair of lateral sidewalls and end walls and formed of a relatively softer more resilient material, said first and second shells cooperating to define at least one holding zone for receiving and holding a tubular member to be mounted to said support, said outer shell having an opening facing said support with said inner shell received in said opening and having support engaging bearing points extending outwardly of said opening beyond said outer shell for engagement with said support, said outer shell having a U-shape and said pair of spaced side walls receiving and enclosing the lateral sides of said inner shell, at least one catch receiving opening arranged in one of said side walls, a resilient catch element carried on the inner shell and extending into said catch receiving opening to retain said inner shell in said outer shell, said inner shell having recesses formed inwardly from its lateral sides adjacent the bearing points to increase the resiliency and vibration reducing characteristics of said holding device, and a bolt-like member extending through said outer shell and said inner shell and biasing said catch element into said opening.