These grips are designed to fit the Round Butt but are full "Square Butt size" grips. They "convert" a small Round Butt to a full size grip. Grips are precision inletted, then hand finished on actual factory frames to assure proper fit. Grips are constructed of the highest quality, kiln-dried hardwood available. Each grip is unique and will vary in color and figure. Checkering is 20 lines per inch.