2" Concrete Hole Saw, 50mm Tungsten Steel Core Bit for Cinder Block, Brick, Rock, Plank Walls for Pipes or Mini Split Lines, with SDS Plus Shank and 2 Center Positioning Drill Bits.

Tungsten Steel Construction: 4" Concrete Hole Saw Built with high-frequency welding technology, this concrete hole saw kit delivers sturdiness and durability for heavy-duty drilling tasks on Hardy Plank, drywall, fiber cement siding, backer board, air brick, stucco, and plasterboard.
Compatible and Versatile: This Core Bit Works seamlessly with SDS Plus tools from all major manufacturers, making it ideal for drilling walls, stones, bricks, and for installations like air-conditioning units, exhaust systems, and sewer pipelines.
Advanced Design Features: The 102mm Concrete Core Bit Equipped with a 220mm SDS Plus connecting rod and 2-piece of 110mm center positioning drill bits, ensuring pinpoint precision and stability during operation.
Enhanced Cutting Efficiency: The Concrete Hole Saw Kit Features triple-edged, razor-sharp teeth for fast, efficient drilling, with internal and external grooves to guide chips outward for smooth operation.
Safety and Usage Tips: For best results hole cutting on high hardness materials, use with flowing water to reduce abrasion. Avoid use on marble, pebbles, and rebar. Begin drilling at lower speeds to prevent tooth breakage.

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