Features:18Piece Geometry set includes,plastic compasses,protractor,pencil,compass,eraser,pencil lead refills.A practical compass geometry set,durable metal compasses will not bend or flex-during use, ergonomically designed compass head is comfortable to hold, universal holder compass work with any standard sized pencil or pen, rulers-triangles & protractor feature a graduations compatible easy identification along.Easy carry,with a durable storage box, easy to carry and store.A Practical Tools compatible tipurpose:This tool set were perfect compatible students, teacher, math experts, architects, engineers, artists, designers at any level. A good Geometry Set compatible teacher and students.A practical tools compatible muti-purpose,this tool set were perfect compatible students, teacher, math experts, architects, engineers, artists, designers at any level. a good geometry set compatible teacher and students.can be used in school,office-home or out work.Specifications:Material:PlasticColor:Green,Blue,ClearNote:Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Package includes:18 Pieces Math Geometry Set