Black sport-wrap laser safety glasses are an light-weight comfortable sport warp frame with a glass laser filter. It is ideal for use in most laser applications and comfortable for long periods of wear. 340 laser filter was primarily developed for protection from multiple lasers wavelengths (980 nm, 1064 nm, 2780 nm, 2940 nm). High optical density at 1064 nm for high power lasers. OD Specifications: OD 5+ @ 950-1000 nm OD 13+ @ 1064 nm OD 7+ @ 1000-1600 nm OD 5+ @ 1600-2400 nm OD 4+ @ 2400-2900 nm OD 5+ @ 2900-10600 nm VLT: 65% Item #151-38-340