1.Ample Supply: our package includes 20 pieces compass for geometry, the pencils have been assembled on the math compasses to use directly, providing you with sufficient quantity for daily use, replacements, and sharing with your loved ones 2.each metal compass tool allowing you to draw circles with a diameter of up to 11 inches. These silver geometry compass with pencil can be used for mathematical geometry and artistic architectural and help you get the quickly 3.High Quality Material: drawing compass are made of high quality metal, which is strong and durable and not easy to break or deform. The point of compasses is sharp and hard, which can work steadily, but you need to be careful of the tip when you use them 4.Impressive Design: our geometry compass set boasts movable arms for improved accuracy, while the non- backing provides added stability when drawing lines. Our product is designed with practicality and comfort in mind, giving you a of use 5.Widely Used: metal math compass is perfect for students, teachers, architects, engineers, mathematicians, artists or designers. It plays an important role in mathematics Color: White Material: metal Package Contents: 20 x Math Compass 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.