Tweet Ultra Cut 100 XT Production Pierce Capacity: 1/2" Maximum Pierce Capacity: 5/8" Plasma Gas: Air, O2, Ar-H2, N2 @ 120 psi (8.3 bar) and Ar for marking with DFC 3000 Shield Gas: Air, N2, O2 @ 120 psi (8.3 bar), H20 @ 10 GPH (0.6 l/min) Ultra Cut 200 XT Production Pierce Capacity: 1" Maximum Pierce Capacity: 1-1/2" Plasma Gas: Air, O2, Ar-H2, N2 @ 120 psi (8.3 bar) and Ar for marking with DFC 3000 Shield Gas: Air, N2, O2 @ 120 psi (8.3 bar), H20 @ 10 GPH (0.6 l/min) Ultra Cut 300 XT Production Pierce Capacity: 1-1/2" Maximum Pierce Capacity: 1-3/4" Plasma Gas: Air, O2, Ar-H2, N2 @ 120 psi (8.3 bar) and Ar for marking with DFC 3000 Shield Gas: Air, N2, O2 @ 120 psi (8.3 bar), H20 @ 10 GPH (0.6 l/min) Ultra Cut 400 XT Production Pierce Capacity: 2" Maximum Pierce Capacity: 2" Plasma Gas: Air, O2, Ar-H2, N2 @ 120 psi (8.3 bar) and Ar for marking with DFC 3000 Shield Gas: Air, N2, O2 @ 120 psi (8.3 bar), H20 @ 10 GPH (0.6 l/min)