20 Piece Geometry Kit Set Includes 4 Metal drawing Compasses, 4 Triple-cornered s (45 degree & 30 degree/60 degree), 6 inch Ruler, 180 degree Protractor, Pencil Sharpener, Eraser, Pencil Lead Refill. Avoid damage: The geometry compass are made of metal ,and comes in triple packs that include cartons, plastic boxes, and bubble bags to protect against damage during shipping. Transparent Rulers: protractor for geometry are made of plastic material, translucent color allows for a clear view of numbers and letters on the page; With the clear mathematics ruler, you can measure an object easily practical Design:geometry compass set Ergonomically designed compass head is comfortable to hold, Universal Holder Compass work with any standard sized pencil or pen, Rulers, Triple-cornered s & Protractor feature a graduations for easy identification along Colour:blue Material:Plastic + Metal Package Contents: 20 x Geometry Set 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.