Each knob is machined from Delrin/Duracon, an extremely durable thermoplastic, right here in Minnesota. Each knob weighs 120g, a fraction of it’s Stainless Steel counterpart. Each shift knob also receives laser etched GrimmSpeed logos around the base. The shift knob itself features a hybrid design that is comfortable in both overhand, and side grip driving styles. These shift knobs are designed to fit the 6spd right out of the box, so if you’d like to hold the shift boot up on your 5spd shifter, you’ll want to add our Shift Boot Retainer to your order. Please add it using the drop down menu as needed.