Old school Sunbeam Drink-Mix Blending Attachment for a Mixmaster.
Looks like a blender jug with a blade in the base and lid - unsure whether there are other parts needed to make it work.
CONDITION
No chips/cracks etc to the jug or lid. The blade needs a good clean as there is a tiny spot of rust on it. The glass has yellowed with age.
DIMENSIONS
22 cm tall, 12 x 9.5 cm wide at the top, it tapers down to 9.5 x 7.3 cm at the base.