This is the optional 175RC RC10 B74.2 Aluminum Nut Kit. Intended for use with the Team Associated RC10 B74.2 buggy this is a great way to shed weight and add a little style to your B74.2. This nut kit reduces weight in three critical areas of the car: sprung weight, rotating mass and weight way up high on the shock towers. Choose from multiple bright anodized color options for a lightweight and stylish upgrade. Package includes one nut kit for the B74.2 consisting of sixteen nuts total.