Anti-Dust Face Mask Filter Valves | GoldStar Tool

Anti Dust Face Mask Filter ValvesrnMade of Abs Material, Durable to Use.  In hot and humid working environment with poor ventilation or heavy labor, the use of mask with breathing valves can help you feel more comfortable when exhaling. Suitable for running, cycling, hiking, skiing, motorcycle climbing, rock climbing tactical training and other activities.rnOuter Size: 40mm x 35mm/1.57″ x 1.38″Inner Diameter: 18mm/0.71″rnAvailable in Black, White, Clear, Red, Blue and YellowrnSold in packs of 10, 100 and 1000.rnFace Mask not included filter valve only.