Makita XUX01Z Couple Shaft Power Head, 18 VoltsHighlights: Overall length: 39 3 4" BL brushless motor delivers up to 9,700 rpm 3 speed options (low: 5,700 rpm, medium: 8,200 rpm, high: 9,700 rpm) allows the operator to match speed to application Lever style lock system allows for quick tool less installation and replacement of attachments Compatible with a variety of optional couple shaft attachments for versatility Electronic torque control turns the motor off it rotation speed suddenly slows or