Accel 170900C Extreme 9000 Ceramic Single Lead with 180 Degree Ceramic Boot Keeps you from having to buy a whole new wire set every time one wire gets cut burned or broken Ceramic plug boot is already installed on the wire Ideal for use with headers or in cramped engine bays Straight ceramic plug boot can withstand up to 2000 degrees 60 inch 600 degree rated double silicone wire delivers maximum spark energy to the plugs with unparalleled RFI suppression