Protect expensive spark plug wire sets from potential burning, cracking, and hardening typically caused by severe under hood heat. Easily installs on wire by removing distributor boot and sliding Protect-A-Wire over spark plug wire. Constructed from high temp resistant glass fiber material Withstands 500F continuous 1200F radiant heat Four vivid colors; Silver, Black, Red and Blue. Available in 2 and 8 cylinder kits Protects electrical wiring, speedometer cable, hoses and more up to 10mm diameter Includes DEI Hi-Temp Shrink Tubes 2 Cylinder Kit Contains: 7 FT. of Line Sleeving, 6 Hi-Temp Shrink Tubes 8 Cylinder Kit Contains: 25 FT. of Line Sleeving, 25 Hi-Temp Shrink Tubes