This listing is for a brand new Toyota 4.88 ratio package deal. Package includes 2 sets of 4.88 ring and pinions, and 2 master installation kits. These items are brand new, top quality (not blems). It is designed to fit Toyota Tacoma, T100, and Tundra pickups with non-locking differentials. If you have any questions feel free to call or email me. Buy with confidence!