it has a brushless motor for increase power
DEWALT D284938 Heavy-Duty 9-Inch Guard for Large Angle Grinder (Type 28 grinding wheels)
Tough and resilient shaft made from quality tool steel
Family Klein Tools 8-Piece Master Electrician"s Carbide Hole Cutter Sets
The Makita® 3-1/4” Starlock® Round Saw Blade is engineered for cutting hard and soft wood
Spyder 600912CF 2-3/4 Tarantula Hole Saw Subcategory:Hole Saws it has a brushless motorUp to 50x more cuts than bi metal hole saws. Up to 10x faster than standard hole saws. Carbide tipped for extended life in tough materials. Cuts nail embedded wood, steel, stainless steel, plastics, non ferrous metals, cement fiber board and more. Up to 2 3 8 Depth of Cut. Utilizes Rapid Core Eject Arbor System rapidly eject the core, quickly change diameter, cut at an angle, and enlarge existing holes. For use in standard rotary drills, not for use