Majestic Arms COCOBOLO WoodAmbidextrous Grips, Checkered for Ruger Mark III 22/45- Classic, checkered COCOBOLO wood grips, fit the Ruger Mark III 22/45 polymer frame pistols. The checkering is edge to edge and just as beautiful as the wood. COCOBOLO wood has an exotic dark wood grain with reddish hews. This wood is rare, expensive, and offered here in limited quantities. When these are sold out, there will be no more so, Order Yours Today!- These grips fit the Ruger Mark III 22/45 polymer frame guns.