This lamb tail docking gas knife, also referred to as a gas de-tailer, lamb de-tailer, tail docking iron, and gas axe, can be easily connected to a portable LP gas cylinder. Originally made by Primus and then taken over by Companion, these original Australian lamb de-tailers are now under the Tradeflame brand. The package includes a tail docking gas knife, a 3 metre hose, a wire brush, an adapter for larger gas bottles, and a spare nipple.