Construction: Inner:100% High quality silicone Cover:silicon Reinforce ply: 4 ply Reinforce:Polyester/Ar-amid/Glass fiber Color:Black/Red/Blue/Green/Yellow SILICONE STRAIGHT COUPLER Construction Inner:100% High quality silicone Cover:silicon Reinforce ply: 4 ply Reinforce:Polyester/Aramid/Glass fiber Color:Black/Red/Blue/Green/Yellow Application: Joining your intake pipe to the throttle body assembly, air metering assembly, intercooler, BOV pipe, or turbo inlet/outlet.Custom compressor, inter-cooler or inlet piping for turbo/supercharged car .Custom cold air intake for non-turbo car,Custom cold air intake for non-turbo car .These silicone parts can be used in trucks, recreational vehicles, boats, or anything else with an engine Characteristic: Good electrical insulating performance No taste, no toxic, Eco-friendly. High temperature resistance,aging,operative temperature:- 40 C ~ 220 C Having physical laziness,Good air permeability