Panduit PRT5EH-Q0 Releasable Lashing Cable Ties have a release tab that permits easy release where changes are anticipated during development, production or servicing in the field. Ideal for heavy duty applications. Extra-Heavy cross section, 20.1” (511mm) length. For Indoor or outdoor use, made of Weather Resistant, Nylon 6.6 with high resistance to ultraviolet light, are black in color and come in packages of 25.