Powder coated baked finish. Ratchet handle for precise application of force Complete with calibration standards and wrench. This is a set of professional micrometer, accurate to 0.01mm (0.00039inch). Hardened and ground spindle with carbide anvil ensure durability and accuracy. 0-4inch 0-100mm/0.01mm Outside Micrometer Machinist Tool Set Of 4 Precision Carbide 4 micrometers with measuring ranges: 0-25mm (0 - 1inch), 25-50mm (1 - 2inch), 50-75mm (2 - 3inch), 75-100mm (3 - 4inch) Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Colour:Photo Color Material:alloy steel Package Contents: 4 x Micrometers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.