Milwaukee Hole Dozer General Purpose Bi Metal Hole Saw Set (39 Piece) Window And Screen Clips allowing easier cutting in challenging allowing easier cutting in challenging positions (especially overhead) for less fatigue Constant orbital action fast cutting in all types of materials with orbital action feature Variable speed trigger improves cutting control in various materials Fixed foot provides robust and solid design for the toughest applications A: The cruise control lever allows you to set and maintain a consistent air speed without continuously squeezing the trigger while seamlessly integrating into the modern toolbox Unlock your cutting potential with the ultimate Milwaukee Hole Dozer Set and experience innovation in every hole drilled