For auction is this excellent tool for making milkshakes on your Oster blender. Graduated readings inside measure ounces and cups. Does not have a gasket, but uses the same as all Oster blender cups. Specialized blade makes shakes blend fast and efficiently, pulling a strong vortex so you can add ingredients and be sure they will blend completely. I added a lid of HDPE for convenience and clean storage. Ships by USPS parcel to the contiguous 48 USA. Winning bidder outside the USA should await an invoice with proper shipping calculated.