Measurement range: 0.010inch - 0.500inch, each radius scale will be individually marked for greater effectiveness and accuracy. User friendly design: includes a holder that allows measurement in difficult to access areas. The protective cover of the snapshot is designed to be rolled up after storage, making it convenient to store and carry radius gauges. In addition, the lid has dust and rust resistance, greatly extending the lifespan of the radius gauge. High quality materials: Made of high-quality materials and treated with satin chrome plating, effectively preventing corrosion and aging at the radius scale. [Size included]: This kit features 26 pieces of radius gauges, ranging from 0.010 inch to 0.025 inch by 0.005 inch; 0.030 inch to 0.100 inch by 0.010 inch; 0.120 inch to 0.300 inch by 0.020 inch; 0.350 inch to 0.500 inch by 0.050 inch. Material: Metal colour: As Shown Package Contents: 1 x radius gauge set 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.