Classic engraved shifter knob w/ extension adapter: Fits 1992-2017 Dodge Viper - except Hurst or Mopar aftermarket shifters Also fits 2015-2023 Dodge Challenger : 6 speed manual w/ stock shifter stick Does NOT FIT Hurst chrome sticks, earlier model years, or any other model 2 1/8" ROUND BALL of thermoset resin 6 speed shift pattern - Reverse upper right Plain sides - no logo M16 x 1.50 threaded brass mount Black-anodized billet aluminum adapter threads into knob and onto stick 2 7/8" long w/ 7/8" upper thread length 4" overall height w/ knob 1" shorter than stock height = 10% throw reduction! Upper thread (male) is M16 x 1.50 ; lower thread (female) is 1/2"-20 Leather console boot snaps into groove near bottom as original Jam nut NOT included - reuse stock jam nut (under boot) Adapter also available by itself