Double 550 offers the option of 2 different sizes of 34 degree first fix framing nails. All nail fuel packs come with a multiple of gas fuel cell - which offer up to 24 month shelf life - that work down to "-15" C and are EC5 and UK CA compliant. High quality paper tape collation, less jamming of nails. Features: Corrosion resistance according to Eurocode 5 standard 2 Fuel Cells with up to 24 months shelf life Compatible with all clipped head framing nails. Work with all standard first fix nail guns that take the 34 degree clipped head nails High quality paper tape collation Pack contains 550 x 90mm x 3.1mm galvanised smooth nails and 550 x 75mm x 3.1mm galvanised ring nails. Also includes 1 fuel cell to suit all gas nailers Specifications: Weight: 5.4 kg Colour: Multi Material: Corrosion Resistant Steel Model Number: 540484