Eureka Tub of Linking Shapes Educational Toy Classroom Supplies, 200 pcs Includes (200) plastic links in (1) plastic storage tub. Linking shapes storage tub measures 3.75'' x 5.5'' x 3.75''. Colorful links of different shapes will help aid in hand-eye coordination, thinking skills, and pattern understanding. Plastic learning link classroom toys come in yellow circles, red squares, blue triangles, and green ovals. Plastic learning links suitable for children ages 3 and up.