Flame Tech welding nozzles come with oxy-acetylene mixers that fit on V-Style torch handles.
W-J series works with light handles, such as the J-Torch, and are available in sizes that proficiently cut from 1/16" to 1/4".
W-1 series works with medium duty handles, such as VTHM-22, and are available in sizes that proficiently cut from sheet metal to 1/2".
W series works with heavy duty handles, such as VTHH-21, and are available in sizes that proficiently cut from sheet metal to 1/4".