Multipurpose vent pipe for 12v Batteries. Simply attach to the vent hole on the top side of your battery. This will allow any harmful gases to escape through the pipe once the end is placed outside your vehicle. Comes supplied with the plastic elbow attached which will port into your battery vent hole. 500mm length, can be extended by adding another Ideal for Car, Leisure and Commercial Batteries Covers 99% of models except for Banner leisure Batteries which take a specific size - see our Banner Listing Very Common for, Lucas, Varta, Platinum, Xplorer, Exide, Leoch made batteries