Speedglas 100, 10V, SL & 9002U/D/V inside cover lenses Pack of 5. Pack of five replacement inside cover lenses to suit the 3M Speedglas 100, 10V, SL, 9002D,9002V and Utility welding lenses. Protects the inside of your welding lens from sparks and splatter. Replace once a month depending on use.