These grips fit the Compact 1911 or Officers Model in a slim profile that is about 0.16" thick.
Compact or Officers Model 1911 grips fit the smaller frame 1911. You can identify the Compact 1911 from the full size by measuring the center to center spacing on the grip screws. If the spacing is about 2 5/8" you have a compact. The full size will be about 3 1/16".
These grips are available in exotic hardwood, hardwood laminate, phenolic laminate and kirinite.