Insight Digital Variable ADF Welding Helmet, SH9 to SH13, I2, 3.93 in x 2.36 in no checkout One piece Y shaped body design One piece Y shaped body design with magnetic legs Built in dial with 2 1 2° increments that turns 360° Hardened center punch marks set position by taping with a hammer Used to establish and mark a centerline at any angle around circumference on a pipe or tank or as a protractor level Excessive heat can damage magnets [Nom] 4 1 2 in Grit 46 Hardness Grade S Hazmat NO Jan San Catalog NO Mounting Threaded Hole Prop 65 YES Quantity 10 per pack Quarterly Flier NO Special Order NO Speed [Max] 13 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