Usage Tips:Description: [POWERFUL PERFORMANCE] The USB 5V BBQ Fan delivers a powerful air flow to keep your fire burning hot, making it perfect for outdoor cooking. [OPTIONAL] Choose according to your need. USB Normal Set A/Set B, Speed Unadjustable Blower Fan with Air Outlet; USB Adjustable Set A/Set B, Speed Adjustable Blower Fan with Air Outlet. [PORTABLE DESIGN] Lightweight and compact, this fan is easy to carry with you, useful accessory for outdoor gatherings, camping trips picnic cooking. [EASY TO USE] Plug and play and setting up the fire quickly, helping you make barbecue more easily. With air outlet, helping you maintain a consistent temperature across your stove or grill. [WIDE USE] This grills fan blower is widely used for wood burning stove, outdoor BBQ firewood stove, outdoor barbecue and picnic or indoor use. Specification: USB Normal Set A Includes: Blower Fan LARGE Air Outlet(Speed Unadjustable) USB Normal Set B Includes: Blower fan Outlet(Speed Unadjustable) USB Adjustable Set A Includes: Speed Adjustable Blower Fan LARGE Air Outlet USB Adjustable Set B Includes: Speed Adjustable Blower fan Outlet Size Chart: 9.7cmx9.4cmx3.3cm/3.82inchx3.70inchx1.30inch Package Includes: 1 Set USB Blower Fan Note: Note: Different Set, carefully choose accordign to your need.