The rectangular 105x83x3mm filters in welder's helmets that protect their eyes from the intense light of welding are sold in different degrees of "darkness" to suit different jobs. We are offering 4pc package which includes each one of darkness D9,D10,D11,D12, but it's your choice to select different combination of darkness, just let us know before the shipment, otherwise we will ship 4 model of each. |