Index nylon cable ties are a type of plastic fastener, typically made from Polyamide 6.6 (Nylon), designed to secure and organize cables and other items. They feature a self-locking, single-piece construction with an inner toothed gear rack for a secure and tight closure, offering good tensile strength. Index cable ties are available in various sizes, colors, and types, with some models offering enhanced features like UV resistance for outdoor use or flame retardancy for electrical installations.