measuring tool Large Radius Gauge Sets Retail price is $618.95 save by buying all at once Made of .049 thick stainless Set is from 9/16 to 2" radius by 1/16 th of inch set 2 1/16"-3" set 3 1/16"-4" set 4 1/16"-5" set 5 1/16"-6" There are two sizes on each leaf,convex and concave Gauges are laser cut, with sizes cut into each leaf Tolerance-Unspecified-visual aid Made in USA