Insight Digital Variable ADF Welding Helmet, SH9 to SH13, Arc Angel, 3.93 in x 2.36 in no checkout Visible liquid dye penetrant testing is Visible liquid dye penetrant testing is a 3 step process Used for detecting faults in welds reversible ratchet Reversible ratchet Eliminates the need for carrying several fixed size wrenches Forged from select alloy steel with continuous taper handle for aligning bolt holes Industrial black finish for corrosion resistance Variable shades to shield and protect eyes from radiant energy during weld Viewing area offers unobstructed views during all stages of welding process without lifting hood Sensitivity and delay adjustments for different tasks and durations Weld and grind modes Four independent sensors reduce blockage possibility