Features: ◆ applicable to a variety of special machinery, on-demand system ◆ multi-axis motor built with independent fan forced cooling to avoid high temperatures ◆ rotary knob easily set fast feed stroke and full stroke ◆ has a timer function, you can do high-speed continuous cycle of action for a long time ◆ homemade button switch and special motors have been through rigorous testing, rugged ◆ automated operation, is the best choice for unmanned aircraft and beginners