Our edx education® Desktop Sorting Rings allow you to easily create individual sorting areas or a Venn diagram for ordering, sorting, comparison and attribute activities. These colourful circular dividers allow your child to have fun learning mathematical skills through play. Three colours supplied.. Set includes: 15 desktop sorting circles, 3 colours. Each ring measures 25cm dai.. Size LxWxH: 28.5cm x 22cm x 8cm. Age: 6yrs+. MPN: 15720