Convenient 12 Paks Of The Most Useable Sizes For Scope Mounting Applications Refill your Leupold factory screw kit or keep these extrastrong, heat-treated screws on hand for your customers and yourself. We've put together the most requested screw sizes in money-saving 12 Paks so it's easier to convert existing rings and bases to Torx head without having to buy more than you need. These are the same screws used by Leupold but will fit many other brands of rings and bases. Mfg: Brownells SPECS: Stainless steel, bright finish. 12 screws per pak. All lengths listed are nominal shank length.