Replacement Internal Lens, Compatible with Brand Jackson Safety, Compatible with Grainger Part Number 2KUV2, 2KUV3, 35MC45, Compatible with Manufacturer Model Number 46148, 46149, 46151, 46152, 46154, 46156, Compatible with Series Nexgen, Features Amber View Lens Allows For Enhanced Clarity Of Weld Puddle, Four Independent Sensors Positioned To Reduce Possibility Of Blockage During Weld, Sensitivity And Delay Adjustments, Technology Allows Unit To Detect Welds Less Than 5 Amps, Variable Shade