Tapetech Interchangeable Fibreglass Support HandleTapeTech is the first company to introduce an interchangeable handle system that allows one support handle to be used with every tool. Whether you use standard, fixed length fiberglass handles or aluminum extension support handles, youll need just one base handle. The base handle for the fiberglass system is model FHTT. The base handle for the extension handle system is model XHTT. The base handle fits the corner roller, corner applicator and nail