Designed to fit most North American high and low pressure gas cylinders, Snap Cap™ devices from Brady® deny access to the main cylinder control and regulator attachment. Made of powder coated welded steel. Meets DOT standards. Equipping your employees with the proper lockout tools and warning devices can save lives, reduce lost employee time, and cut insurance costs. Brady is a world leader in lockout/tagout products and services, offering industry expertise and a broad range of durable, easy-to-use lockout devices.