Nylon tube clips Fastening system: Self-blocking. Material: Nylon 6/6 MIL-SPEC M 20693B. Colour: Black and natural. Self-extinguishing: UL 94 class V2. Sealing strength: conforming to regulation MILS23190E or superior. Operating temperature: From 40° below zero to 85°. Rounded lateral edges. Inclined tip for easy and safe insertion.