Dear customer, if you have any questions after receiving the goods, please feel free to contact us. We will handle it as soon as possible. Thank you for your support. Description: Made of iron material,sturdy and durable.23 Pieces Geometry Kit Set includes:1x large compasses,1x Needle pin,1x Pencil feet,1x Long pole,1x Big dividers,1x Small gauge,1x Ink pen,1x Square pipe,1x Small circle compasses,1x Spring compasses,1x Spring divider,1x 117 Straight line pen,1x 118 Straight line pen,1x 119 Straight line pen,1x Concentric nail,1x Wide mouth pen,1x Extension rod head,1x Copper tube,1x Screw driver,1x Small compass,1x Blossom square,1x Oil stone,1x Little pencil tube. For math,geometry,art,drafting and drawing. With a durable storage box,easy to carry and store. Excellent for use in school or at home.The best circle drawing tool for engineers,draftsmen,teacher,student,artist,mathematician,carpenter etc. It's also a perfect gift for kids and friends,easy to take to class and to store in the classroom and at home. Specifications: Material:Iron Size: Size:23.5x15x2.4cm/9.25x5.91x0.94inch Note: 1.Please allow slightly error due to manual measurement. 2.Due to the difference between different monitors,the picture may not reflect the actual color of the item. 3.Wish you a wonderful on-line shopping! Package included: 1 Set Drawing Compass