The National 7S Surface Mix Hand Torch continues the innovation begun with the National 8M Combo Bench Torch.  Like the 8M, the 7S is able to use the full range of interchangeable surface mix tips as well as a wide array of premix tips when used with the PA-1 Adapter.
Key features of the 7S Surface Mix Hand Torch:
Interchangeable SM Series surface mix tips
Interchangeable premix tips
Rugged and proven needle valve controls
“B” size, 9/16-18 threaded hose connections