Features: The 12V 9733 blower delivers powerful 5500RPM airflows with double ball bearings for durability, featuring a 5.5x2.1mm female input (center positive) for outdoor power supplies and adapters. Engineered with a 3.3cm diameter air duct and plastic housing, this high efficiency fan ensures optimal ventilation performances for demanding industrial and household applications. Designed for DIYer enthusiasts, outdoor adventurers, and technical professional requiring reliabled airflows solution for metal smelting, wood stove, or electronic cooling systems. Ideal for heating furnaces, backyard barbecues, camping setups, and metalworking environments where robust airflows and rapid ignition assistance are critical. Combining portability with industrial grade construction, this versatile blower exceling in both indoor workshops and scenarios while maintaining low energy consumption. Specifications: Component: Plastic Size: about 9.7x9.7x3.3cm Double ball bearing Voltages:12V Speed: 5500rpm 9733 blower is used for heat dissipation, field fire and combustion aid Package Includes: 1 Set Electric Fan 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 color. Thanks for your understandings.