Hi Graham! They are all "screw closed for on". However the little Olight cannot come apart however much you unscrew for off!my bugbear with ‘twisty’ pocket torches are the ones that you have to leave partially unscrewed to be in the off state and to turn it on you need to screw it shut! What a stupid design as it always unscrews by itself in your pocket. The ONLY way is when fully screed home it is off and you slightly unscrew to turn it on
Hugh, do these torches just rotate round and round to the various modes or are they screw in types and of screw type are they the right way?