These pillars are turned and contoured on our CNC lathe in house and are made from 6061 aluminum and will fit the guns with the Remington 700 footprint. Eliminating stock crush when tightening the action screws and insuring a consistent fit to the stock when properly bedded. The deep grooved pillars are machined a little long to allow you to get that perfect fit between the action and the bottom metal. The 5/16th hole in the middle gives plenty of clearance for the action screws, insuring there will be no contact or “bind” in the screw. Paired with our action bedding screws you have the necessary tools for an outstanding bedding job.