LIANGSTAR Laptop Cooling Pad, Laptop Cooler with 6 Quiet Fans for 12-17 Inch Notebook Gaming Fan Stable Stand, 7 Height & Wind Speed Adjustable, 2 USB Port & Phone Holder (Black) Black workwarehouse Shaft Length: 2-1/4 Inch

Shaft Length: 2-1/4 Inch

it has the patented glue and structure

Buzzer Alarm&Temperature--- The battery monitor can set low and high voltage buzzer alarm and short press"M"key can switch voltage and temperature(Celsius)

and heavy machinery even fits into tight spaces and deep grooves to protect metal parts from wear and rust

LIANGSTAR Laptop Cooling Pad, Laptop Cooler with 6 Quiet Fans for 12-17 Inch Notebook Gaming Fan Stable Stand, 7 Height & Wind Speed Adjustable, 2 USB Port & Phone Holder (Black) Black workwarehouse Shaft Length: 2-1/4 InchLIANGSTAR Laptop Cooling Pad, Laptop Cooler with 6 Quiet Fans for 12 17 Inch Notebook Gaming Fan Stable Stand, 7 Height & Wind Speed Adjustable, 2 USB Port & Phone Holder (Black) Product Features 6 Ultra Quiet Fan & Adjust Fan Wind SpeedThis special laptop cooler with 6 ultra quiet fans. Our laptop cooling pad 6 fans can work together, or 3 fans run separately, two separate switch control fan speed from 0 to max freely Unique 7 Height Adjustable &