5 Pieces math geometry tools: 1 x compass, 1 x divider lead, 1 x pencil lead, 1 box refill, 1 x compass box Good quality and durable material: the compass is made from stainless steel, ergonomic design and simple to use; Center wheel for easy adjustment Practical: the large size compass can bent to draw a larger circle and divider apply for intercept line segment, measurement, division Sturdy and easy to carry: 4 pieces enclosed in a transparent box for protection and organization, easy to carry and store Useful tool: 5 pieces math geometry tools set especial suitable for school teaching use; It is good math tool set for school Stainless steel drawing compass math geometry tools for circles, total 5 pieces (included box) Lightweight and easy to carry: The compass is made from stainless steel, ergonomic design and simple to use; 4 Pieces enclosed in a transparent box for protection and organization, easy to carry and store. Application: Mechanical pencil for compass apply for drawing circle or circular. Especial suitable for school teaching use, engineering drawing, sketch geometric graph. Specification: Quantity: 5 pieces (include compass box) Material: stainless steel Compass box size: 17.5 x 4.5 x 1.6 cm