DeWalt’s D51276K and D51257K 15- and 16-gauge Finish Nailers have a patent-pending Sealed Lube Dual Tech™ system of dual stack piston ring and non-stick head valve design to maintain the motor’s durability whether the user chooses oil-free or oil-lube operation. The 3.85-lb. nailers can drive 1-inch to 2-one-half-inch nails into hardwoods. Price is $189 for the 15-gauge D51276K and $169 for the 16-gauge D51257K.