Radnor® RD Series Auto-Darkening Helmets deliver the performance and durability that expert welders demand! Designed with the skilled welder in mind, RD Series Auto-Darkening Helmets utilize the latest in digital technology with simplified controls. The Radnor Welding Helmets' top grade components deliver the performance and reliability to boost worker productivity. Radnor Welding Helmet Features: - ASIC (Application Specific Integrated Circuit) technology minimizes electromagnetic noise interference, increases arc detection capabilities, and has fewer components providing enhanced reliability - High quality heat-resistant shell - Highest rating for superior optical quality - Three models of auto-darkening filters to choose from: RD48 (good), RDX60 (better) and RDX81 (best) - X-TIG Mode (RDX60 and RDX81) provides heightened sensitivity for sunlight interference, low amperage and out-of-position welding - Easy to operate internal controls - Large LED display is easy to read - Quick access to cover plates for simplified trouble-free change out - Professional quality at an unmatched value