PetBird Xpress offers over 1,000 items including Twist Off Crocks. Our Customer Care Representatives are standing by to help with your questions. We will ship your Twist Off Crocks in 1 day. Count on dependable delivery and shipment tracking from UPS and Federal Express. At PetBird Xpress, your satisfaction is our number 1 concern! We've been at it for over 15 years and we have satified thousands of customers like you.