M601 math set 1. material: plastic 2. used for student study 3. it popular for Africa ... , 1pc 15cm ruler, , 1pc 45-45-90 triangle ruler, 1pc 30-60-90 triangle ruler, 1pc of 180 protactor,3.Packing: 12 sets/inner ... . G.W/ N.W : 24/22 kg popular M-601 plastic geometric ruler set