11Pieces Math Kit: 1 * Eraser, Ruler, pencil sharpener, eraser, protractor, 60 triangle ruler, 45 triangle ruler, compass, pencil and 3 replacement pencils, Essential tool kit for higher tier maths and phics. High Quality Material: Geometry set is made of premium metal and plastic material, transparent plastic rulers for easy measurement and read, metal compass hold the shape for single circle accurately. Smooth Writing Pencil: 1 mechanical pencil with 1 set of 0.7mm replacement lead refills, features smooth writing and durability, rubber pad design on the pen holder, soft and durable, reducing friction on the fingers, compass draw up to a 11" diameter circle. Versatile Compass Set: Geometry set is a necessary tool for maths, geometry class, drafting, architectural drawings, engineering designs, both mechanical design and construction, ideal for students, teachers, designer. Durable Packing Case: Transparent compass case is durable to protect and keep the tools in an orderly place, case size: 18.2*9.7cm, all tools ackaged good in it for easy to carry and store.