Bullet_point: ['Bahco was the first to create a successful bi-metal blade that combines a flexible, shatter-resistant spring steel back with a high speed steel cutting edge to provide faster, more durable cutting power.', 'Bi-metal construction with 8% cobalt for increased wear resistance.', 'Cutting edge features 4 to 6 teeth per inch and is electron beam welded to a tough alloy back.', 'Designed for professional use, holesaw fits all power drills, both stationary and portable.', 'Sandflex bi-metal holesaws work excellently in most materials such as wood, plastics, non ferrous and ferrous steel including stainless steel.']

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