Specifications:Transmittance: >99.8%Material: Fused SilicaLaser Lens Power: 0-4KWSize: D24.9x1.5mmProtective Lens - White (D24.9 x 1.5)SKU: 181Quantity*Add to CartRETURN & REFUND POLICYNon-Refundable SHIPPING INFO2-3 Days for Available stock Items 7-14 Days for Out of Stock Items