A unique product to Arctic Hayes, our smoke-stick pens are the first product on the market offering a pencil-thin smoke pattern. Ideal for testing slight air-movement, gas spillage and mandatory CO spillage checks of boiler/case sills after fitting or re-fitting. • Unique product to Arctic Hayes • Up to 30 minutes of smoke per stick • Refill packs available separately • Non-corrosive, non-hazardous Kit includes • 1 x smoke-stick pen holder • 3 x smoke-stick refills