Pair of Knobs and Stems for the Outlaw Leather welding hood (previous headgear design, see pictures). This new set of hardware features all 304 Stainless Steel threads to last for years to come. Also included is a high quality Buna O-Ring to hold knob at the tension that you set it to. The designs on our knobs are 100% 3D printed into the knob, so they will never wear off or fade.