MDBTTOOLS 5-1/2"(140MM) Bi-Metal M42 Hole Saw with 8% Cobalt– Deep Cut 2" Depth HSS Hole Cutter for Wood, Plastic, Drywall, Metal Sheet & Hardened Stainless Steel（Without Arbor） — Open-Box, 17% Off

1. High Concentricity 0.3mm+/-0.1mm – Precision Drilling, Clean Round Holes Engineered to 0.3mm+/-0.1mmtolerance for exceptional concentricity. Every hole is perfectly round with minimal wobble, reducing the need for rework or filing. Ideal for door hardware, hinges, pipe penetrations, and any application where hole accuracy matters.

2. M42 with 8% Cobalt – 30% Faster, Lasts 3X Longer Made from premium M42 high-speed steel with 8% cobalt alloy. Withstands high-temperature drilling in stainless steel and alloy, cuts 30% faster, and lasts three times as long (3X) as standard HSS hole saws.

3. 2" Deep Cutting Depth – 45% Deeper than Ordinary 1-3/8" Models Full 2-inch (50mm) deep cup lets you drill through thick wood beams, multi-layer drywall, pipe walls, and heavy metal plates that standard hole saws cannot handle.

4. Oval Eject Slots + Progressor Tooth – Fast Chip Clearance & Easy Plug Removal Strategically designed oval-shaped eject slots rapidly clear chips to reduce heat buildup, while the 4/6 TPI variable (progressor) tooth design cuts smoothly across wood, metal, and plastic. Plug removal is quick and hassle-free.

5. Reinforced Shoulders for Extra Durability Reinforced shoulder construction provides added strength to prevent cracking or warping under heavy use. This single hole saw is built to handle professional job site demands and tough materials day after day.

MDBTTOOLS 2" Deep Cut Hole Saw – M42 Bi-Metal with 8% Cobalt, High Concentricity 0.3mm+/-0.1mm, 3X Life – Hole Saw Only (Arbor & Pilot Bit Sold Separately) 【Precision Drilling Starts Here – High Concentricity0.3mm+/-0.1mm】 This hole saw is engineered to a tight concentricity tolerance of ±0.3mm. That means perfectly round, wobble-free holes for door hardware, pipe penetrations, and any precision installation. No filing, no rework – just clean, accurate results. 【M42 with 8% Cobalt – 30% Faster, 3X Longer Life】 Manufactured from premium M42 high-speed steel and 8% cobalt alloy. Compared to standard HSS hole saws, it cuts 30% faster and lasts three times as long (3X). Excellent heat resistance for drilling stainless steel, alloy, brass, and copper. 【2" Deep Cup – 45% Deeper than Ordinary 1-3/8" Models】 Full 2-inch (50.8mm) cutting depth lets you drill through thick wood beams, multi-layer drywall, pipe walls, and heavy metal plates in one pass – something standard shallow hole saws cannot do. 【Oval Eject Slots + Progressor 4/6 TPI Teeth】 Oval-shaped eject slots rapidly clear chips to reduce heat and prevent clogging. The variable 4/6 TPI progressor tooth design cuts smoothly across wood, metal, and plastic, while making plug removal fast and hassle-free. 【Reinforced Shoulders for Heavy Duty】 Reinforced shoulder construction adds extra strength, preventing cracking or warping under high torque. Built to last on professional job sites. 【Compatible with Standard Arbors】 This hole saw features a standard 7/16" (or 3/8" – please confirm) drive flat. It works with most quick-change or standard arbors. For best performance and perfect centering, we recommend using a pilot drill bit. 【Need an Arbor & Pilot Bit?】 This listing is for the hole saw only. If you need a complete ready-to-use set, please check our MDBTTOOLS Arbor & Pilot Bit Set (sold separately) – designed to pair perfectly with this hole saw for a wobble-free, precision fit. 【Materials You Can Drill】 - Thick stainless steel (up to 2" depth) - Alloy steel, aluminum, brass, copper - Wood, plywood, MDF - Plastic, PVC, acrylic - Drywall, gypsum board Upgrade to MDBTTOOLS – deep cutting, pinpoint accuracy, and 3X the life. Get the hole saw today and pair it with our arbor set for a complete drilling solution.