The filter glasses are particularly suitable for welding and are optimal protection against bright light and ultraviolet and infrared radiation. Build-in high sensitivity probe and lithium battery, have no damage to your eyes. Lens width are reinforced to anti-shock,strong abrasion resistance,impact resistance, in use,great for welding. Style:Head style Application:Suitable for construction work,welding gas welding arc welding Product function: High temperature,radiation protection,welding slag splash Size of glasses: 152 x 65mm Colour: black Material: ABS Package Contents: 2 x Glasses 10 x Change the lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.