Ryobi R15GN18-0 18V ONE+ Cordless 15 Gauge Nailer Bare Tool. As part of the Ryobi 18V ONE+ system of over 200 cordless tools for the home, garden, automotive, crafting and much more, the Ryobi 18V ONE+ R15GN18-0 Cordless 15-gauge finish nail gun is perfect for second fix applications such as installing skirting boards and door architrave, fastening door casings, crown mouldings, coving and much more. Avoid the need for a noisy compressor, annoying air hose or costly gas canisters with the 18V Cordless 15G Finish Nail Gun. Powered by AirStrike technology, this nail gun fires 15 Gauge nails (1.8mm) between 24 and 65mm long with precision and speed. Tool-less jam release and depth of drive adjustment helps protect work surfaces and allows.