Made from aircraft grade billet aluminum, these reverse lockout boot adapters clean up the transition between your Sickspeed shift knob and your OEM lift up reverse. Installs in seconds!! Keep your shift lever looking clean with this piece. Designed to work specifically with ALL Sickspeed brand shift knobs. Don't forget to check out our other listings for parts and accessories to suit your ride. We are always expanding so keep an eye out for more supreme quality products from Sickspeed. Thread pitch is 12X1.25 for the above listed vehicles. Purchase includes a die-cut vinyl decal: Check out the manufacturer's website for more info and pics.