SAS Safety 66520 Raven Powder-Free Disposable Black Nitrile 6 Mil Gloves, Double-Extra Large, 100 Gloves by Weight by SAS Safety. SAS Safety 66520 Raven Powder-Free Disposable Black Nitrile 6 Mil Gloves Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.