Power Hobby - Twister Twin / Dual 40mm 1/8 1/5 Motor Aluminum Cooling Fan - Red COR00133 This configuration

This configuration

5x6mm BHCS (Black)

Six mounting holes on each post for different placement positions

practice or just playing around

and a further variant the M1A1HA was later developed featuring depleted uranium armor

Power Hobby - Twister Twin / Dual 40mm 1/8 1/5 Motor Aluminum Cooling Fan - Red COR00133 This configurationSuper high speed fan with a monster performance. Extremely high airflow. Recommended power source 3s lipo. The 3S adaptor is included with an on off switch. Specifications: Dimensions: 80x40x28mm Bearing: Ball Bearing Operating: Voltage 6V 11. 1V Motor mount sold separately: 36 38 Dia. Motor: Part# PHMount01 40 42 Dia. Motor: Part# PHMount02 47 49 Dia. Motor: Part# PHMount03 56 58 Dia. Motor: Part# PHMount04