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 500°F continuous 1200°F radiant heat Protects electrical wiring, speedometer cable, hoses & more up to 10mm diameter Includes DEI Hi-Temp Shrink Tubes Four vivid colors; Silver, Black, Red & Blue Available in 2 and 8 cylinder kits