Torque Solution Fat Head Shift Knob (Silver) - 12x1.25mmTorque Solution Fat Head Shift Knob (Silver) Applications: Universal 12x1. 25 Torque Solution fat head billet shift knobs are machined from 6061 Billet material and hard anodized to resist scratching and wear. These knobs are designed to fit reverse lockout style shifters and do not require an adapter or locking nut. Each knob weighs 188g 6. 6oz to give you that more positive & smooth feel when shifting. Suitable for all forms of racing and guaranteed