FEATURES-For 1911-Gray/Black Checkered-G-10 material is a fiberglass based epoxy resin laminate -It is an extremely tough and durable material that is impervious to moisture weather or chemicals-The multi layered construction allows use of different colors creating attractive patterns as it is machined-Pachmayr G-10 Tactical grips are the toughest most durable and best looking grips on the market