10 Piece Geometry Kit Set includes: 2 Metal Study Compasses, 2 Triangles (45° & 30°/60°), 6" Ruler, 4" Protractor, Pencil for Compass, Pencil Sharpener, Eraser, Pencil Lead Refill A Practical Compass Geometry Set: Metal compasses will not bend, Ergonomically designed compass head is comfortable to hold, Universal Holder Compass work with any standard sized pencil or pen A Practical Tools for tipurpose:This tool set were for students, teachers, math experts, architects, engineers, artists, designers at any level A Good Choice for Teachers and Students: It's also a gift for your family and friends,easy to take to class and to store in the classroom and at home. Just choose it as school season gift Easy to carry: The set comes in a compact, hard-shell case that keeps all the pieces securely in place, ideal for students on the move and for keeping your desk neatly organized Unjoo Math Geometry Sets 10 Piece Student Supplies with Shatterproof Storage Box