LAIWEI High Quality 55mm Hole Saw (2.2 Inch Hole Saw) ✔ Hole saw bits penetrate wood easily. These hole saws are perfect for jobs that require high performance and precision. Great for cutting wood, plastic, drywall and more. ✔ The high speed steel cutting edge of the LAIWEI 2-5/32” hole cutter provides impact resistant teeth and prevents them from falling out. Soft spring steel cushion absorbs shock from difficult-to-drill materials. ✔ Multipurpose power drill tool. Ideal for plumbing, construction, aircraft, electrical, maintenance and automotive applications. ✔ Hole knife cuts faster and smoother. Holes for pipes and pipes, door locks, pipes, hoses and antennas. NOTE: For safety, wear goggles and gloves when using the hole saw kit. What else can LAIWEI do? 7x24 hours customer service.