Radii or fillets can be checked or laid out easier, faster, and more accurately with Starrett 167 Radius Gages. Available individually and in sets, fractional sizes 1/64-1/2", decimal sizes .010-.500" and in millimeters from 0.5-15mm. 5.5mm Radius Gage.EATURES Made of satin finish stainless steel - rust and stain resistant Each gage is clearly marked with its radius Each gage has five different gaging surfaces for both convex and concave radii All gages have precision finished radii with extra smooth, accurate edges SPECIFICATIONS Made in America: Yes Range (mm): 5mm Gages: 1 Material: Steel