Funny Enamel Pins Combination: the package comes with 20 pieces of science pins, available in 20 different styles, lovely and vivid, enough to meet your matching and decorating demands in Reliable Material for Lasting Service: made of alloy and colorful enamel, the science brooch is compact and sturdy, not easy to fade or rust, to stay vivid for a long time; Moreover, there is a butterfly clutch on each pin, to cling to target position tightly, hardly falling off Interesting Lab Elements: the laboratory enamel pin set features patterns, including book, tube, microscope and more, which can arouse students' interest in chemistry and science A Wide Range of Applicable Occasions: the flask test tube enamel pin brooches can well match your shirt, scarf, cap, bag, backpack, jeans, jacket, etc., suitable for both formal and inform occasions, to add more charm and details to you, help you stand out in the crowd Cute Gifts to Show Love and Care: the cute pins for backpacks are perfect gifts for science enthusiasts, like your teachers, classmates, students, kids, boyfriend, girlfriend and more, to your love and care to them at their birthdays, anniversaries, Christmas, Thanksgiving Day, graduation day, Halloween and more Colour:As Shown Material:Metal Package Contents: 20 x Brooch Pins Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.