Mid and Rear Mount Shifter. Various colors available .Shift boot ring is 5 inches outer diameter and 4 inches inner diameter ,Stainless . 1005 series fits stainless steel shifters 1006 series fits stainless or aluminum shifters . Hand Brake Boot has an oval stainless boot ring ,series 2004 is for upright hand brakes and series 2005 is for lo-line series hand brake.