Jackson Safety Solera II ADF Shade 3/10, 2.5" x 4.25", 46410REPLACEMENT PART: Solera II ADF Replacement Drop-in; economical way to convert passive welding helmet to auto-darkeningUNIVERSAL SIZE: ADF is a universal fit for most 2”x4.25” welding helmetsCOMPATIBILITY: Compatible with HSL-1, HSL-2 and Huntsman series along with many other passive style hoodsDESIGN: True Color technology delivers crystal-clear view of the weld; Ultralight design weighing 1.3 oz.CERTIFIED: Meets or exceeds ANSI Z87.1 and CAN/CSA Z94.3 standards. CE certified