Studio view of the blue Bosch Daredevil 4-1/8 inch carbide hole saw featuring deep side slots and the Daredevil logo.
Side profile of the blue hole saw highlighting the deep cup design for single-pass cutting and the white Daredevil branding.
Material compatibility chart titled "Best For" listing wood, masonry, brick, block, drywall, PVC, wood with nails, concrete, ceramic tile, and metal.
Action shot of a construction worker kneeling to drill a hole into the wooden base plate of a framed wall using the Daredevil hole saw.
Close-up of a worker using a cordless drill and the blue hole saw to cut a hole in cement board flooring near a white pipe flange.
Action shot of a worker using the blue carbide hole saw to drill through the bottom plate of a wooden wall frame.
Studio arrangement of various sizes of blue Daredevil carbide hole saws resting on a construction surface next to a concrete block.
Comparison view showing blue Daredevil carbide hole saws alongside black standard hole saws arranged on a tiled surface with a concrete block.
Studio view of the blue Bosch Daredevil 4-1/8 inch carbide hole saw featuring deep side slots and the Daredevil logo.
Side profile of the blue hole saw highlighting the deep cup design for single-pass cutting and the white Daredevil branding.
Material compatibility chart titled "Best For" listing wood, masonry, brick, block, drywall, PVC, wood with nails, concrete, ceramic tile, and metal.
Action shot of a construction worker kneeling to drill a hole into the wooden base plate of a framed wall using the Daredevil hole saw.
Close-up of a worker using a cordless drill and the blue hole saw to cut a hole in cement board flooring near a white pipe flange.
Action shot of a worker using the blue carbide hole saw to drill through the bottom plate of a wooden wall frame.
Studio arrangement of various sizes of blue Daredevil carbide hole saws resting on a construction surface next to a concrete block.
Comparison view showing blue Daredevil carbide hole saws alongside black standard hole saws arranged on a tiled surface with a concrete block.
BOSCH

Bosch Hole Saw HMD412 4-1/8 Inch Daredevil Carbide Multi Material Deep Cup 2-3/8 Depth Wood Tile Brick Block Aluminum Drilling Conduit Boring Tool

In stock
SKU: HMD412
$29.89 USD

Description

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EDGE Daredevil 4-1/8-Inch Multi-Material Deep Cut Carbide Hole Saw with 2-3/8-Inch Boring Depth and Specialized Masonry Metal Geometry

The Bosch Daredevil 4-1/8 Inch Carbide Hole Saw Multi Material Deep Cup 10x Faster for Wood Brick and Tile delivers specialized deep-cavity substrate excavation utility and exceptional rapid coring efficiency across demanding commercial plumbing layouts, residential electrical rough-ins, and masonry wall alterations. Engineered with a premium carbide-tipped tooth layout bound natively to a reinforced deep-draw steel cylinder chassis, this high-performance layout tool cleanly penetrates highly abrasive surfaces up to 10x faster than standard bi-metal configurations. This professional contractor solution resolves frequent tool change downtime bottlenecks when hitting embedded brick boundaries, multi-step chip-out fatigue on double-stud frames, and core plug friction lock by combining an extended 2-3/8 inch deep cutting barrel structure with integrated large debris ejection ports and standard threaded arbor mandrel compatibility. Outfitted with an essential 4-1/8 inch cutting diameter path, a 50% deeper cup profile capacity to complete single-pass structural drill cycles, and a hardened tool geometry optimized for structural timber, concrete block, ceramic tile, and aluminum sheets, this robust multi-material boring hardware optimizes subcontractor project metrics during utility conduit routing, switchboard pipe staging, and structural partition modifications.

Best Used For:

  • Recessed Lighting Openings: Boring clean, uniform 4-1/8 inch architectural pathways natively through multi-layer ceiling drywall, plaster, and underlying timber joists for fixture housing placement.
  • Commercial Drainage Line Staging: Penetrating heavy structural foundation brick, concrete masonry blocks, and subfloor assemblies single-handedly to route thick waste pipe networks.
  • Multi-Material Wall Perforations: Slicing crisp utility paths cleanly through external aluminum structural panels and interior backing tiles without accessory tool change downtime.

Key Performance & Safety Features

  • Premium Hardened Carbide Teeth: Heavy-duty industrial-grade carbide tips isolate extreme friction wear loops completely, easily surviving abrasive masonry contacts that destroy bi-metal units.
  • Extended Deep Cup Capacity: Specialized 2-3/8 inch deep structural barrel layout eliminates the standard need to drill, manually chip out the core disk, and re-drill multi-layer walls.
  • 10x Accelerated Speed Geometry: Precision-engineered tooth spacing pattern maximizes material extraction velocities, reducing driving tool drag spikes and load drop limits.
  • High-Clarity Edge Alignment: Scoring tip configuration reduces layout boundary tear-out entirely, securing a clean contractor finish on both structural entry and exit faces.
  • Universal Arbor System Link: Standard threaded base plate mounts rigidly onto universal large-diameter mandrels, minimizing runout wobble errors under continuous heavy loading.

What's Included

  • (1) Bosch Daredevil™ 4-1/8-Inch Deep-Cut Multi-Material Carbide Hole Saw Cup (HMD412)
  • Note: Drive arbor mandrel assembly and specialized center pilot bit are sold separately.

Technical Specifications

Specification Value
Brand Name Bosch
Model Number HMD412
Product Sub-Brand Series Daredevil™ Product Line
Product Classification Type Deep-Cut Carbide Hole Saw Cup
Active Saw Cutting Diameter 4-1/8 in.
Maximum Tool Boring Depth 2-3/8 in.
Cup Structural Style Deep突 Cup Design (50% Deeper than Standard Saws)
Primary Cutting Material Core Precision-Welded Micrograin Carbide Tips
Main Shaft Barrel Assembly Hardened Drop-Forged Steel Body Cylinder
Minimum Drive Chuck Clearance 3/8 in. Size
Connection Mandrel Requirement Standard Threaded Arbor Drive Mount Fitting
Target Application Substrates Wood structural timber, aggregate brick, concrete block, tile, aluminum

Pro-Tip: When cutting thick aggregate brick block fields or double-stud configurations, execute a slight back-and-forth structural rocking motion with your driver tool body. Modulating this contact tracking vector maximizes clearing velocities through the side slot extraction paths and keeps the active carbide tips running completely cool.