Features: This is a outside micrometer set with measuring range between 0 and 100mm. Made of high quality cemented carbide and cast iron, these outside micrometer are sturdy and durable. Four different sizes micrometer and 4pcs accessories, enough to meet your basic need. Widely used for precise measurement of length, diameter or thickness. It comes with a sturdy wood case for quick access and protection. Specifications: Material: Cemented Carbide and Cast Iron Measuring Range: 0-100mm Precision: 0.01mm Unit: mm Four Micrometer Sizes: 0-25mm, 25-50mm, 50-75mm, 75-100mm Three Accessories Sizes: 75mm, 50mm, 25mm Box Size: Approx. 34 x 23 x 3cm or 13.39 x 9.06 x 1.18inch Weight: 1700g(approx.) Package Included: 4 x Outside Micrometer 3 x Accessory 1 x Wrench Note: 1.Only things package included, no other stuff. 2.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering