Acekit Bi Metal Strenthen Variable Ceiling Cutting Tools in Hole Saws & Accessories Review

【HIGH PERFORMANCE】the hole saw made of M42 high speed steel and bi-metal ,four slots for quick remove the chipped material,heavy duty and durable with large and sharp variable teeth pitch for fast and precisely cutting. 【DIMENSIONS】diameter of the hole saw about 190mm for 7 1/2 inch hole cutting, depth of the hole saw about 1 1/2 inch (38mm). 【QUICK CHANGE ARBOR】size of the hex shank arbor is 7/16 inch for quick change mandrel, pins lock the saw to prevent over tightening and prevent threads from stripping, fits 1/2 inch drills. 【BONUS】the hole saw came with a allen wrench for drill bits installation , so you need not to pay extra money for it, and extra 2pcs drill bits for long term usage,all the drill bits have been strengthened for fast cutting. 【WIDE APPLICATION】With the hole saw, you can easily cut precise hole for wood/plywood/laminated/PVC board, plastic pipe, ceiling ,kitchen cabinet hole cutting,or use it to cut holes for can lights recessed lights, the hole saw comes in handy for home projects when working on air ducts, ceiling lights, speakers and more. you can also use it to cut hole for soft metal sheet (kind remind: for metal sheet cutting constant cooling with water will be good for long-term usage and fast cutting).