Features: Elevates your blower efficiency with our blower duct, essential accessory for any hand cranked, electric, or usb powered blower. Crafted from iron materials, this metal extension duct offer a safe distance from flames and comes in four versatiled sizes to fit your specific needs. For professional and diyer enthusiasts alike, this blower duct is designing to cater to those who require reliabled tool for their projects. Whether you're barbecuing, metal smelting, or managing air flows in kitchens and restaurants, this duct ensures your blower performs at its best. Experience hasslefree installation with blowers, making this the go to duct for your ventilation and air circulation tasks. Specifications: Component:Iron Size:Approx.45x200x35mm/1.77x7.87x1.38inch Size:Approx.50x190x40mm/1.97x7.48x1.57inch Size:Approx.55x300x45mm/2.17x11.81x1.77inch Size:Approx.65x300x55mm/2.56x11.81x2.17inch Color:Silver Package Includes: 1pcs Iron Extension Air Duct note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorings of the item. Thanks for your understandings.