Studio product shot of the Diablo 1-11/16 inch Bi-Metal Hole Saw, featuring a red cylindrical body with the white Diablo logo and vertical side slots for plug removal.
Retail packaging for the Diablo 1-11/16 inch Bi-Metal Hole Saw, highlighting Variable Tooth Technology, a 2-3/8 inch cutting depth, and compatibility with the Snap-Lock Plus mandrel system.
Diagram labeled Fast Plug Ejection, showing a sequence where the red Diablo hole saw is angled to easily release a wood plug through the open slot design.
Infographic titled Increased Cutting Depth, comparing the tall red Diablo hole saw with a 2-3/8 inch depth against a shorter standard gray hole saw with a 1-5/8 inch depth.
Graphic titled Fastest Mandrel Change, illustrating the Snap-Lock Plus system where the black mandrel quickly connects to the red hole saw with directional arrows indicating the locking mechanism.
Close-up action shot of a red Diablo hole saw attached to a drill, cutting into a large black metal pipe, demonstrating its metal-cutting capabilities.
Studio product shot of the Diablo 1-11/16 inch Bi-Metal Hole Saw, featuring a red cylindrical body with the white Diablo logo and vertical side slots for plug removal.
Diablo's Mandrel Attachment Speed Side by Side promotional video
Studio product shot of the Diablo 1-11/16 inch Bi-Metal Hole Saw, featuring a red cylindrical body with the white Diablo logo and vertical side slots for plug removal.
Retail packaging for the Diablo 1-11/16 inch Bi-Metal Hole Saw, highlighting Variable Tooth Technology, a 2-3/8 inch cutting depth, and compatibility with the Snap-Lock Plus mandrel system.
Diagram labeled Fast Plug Ejection, showing a sequence where the red Diablo hole saw is angled to easily release a wood plug through the open slot design.
Infographic titled Increased Cutting Depth, comparing the tall red Diablo hole saw with a 2-3/8 inch depth against a shorter standard gray hole saw with a 1-5/8 inch depth.
Graphic titled Fastest Mandrel Change, illustrating the Snap-Lock Plus system where the black mandrel quickly connects to the red hole saw with directional arrows indicating the locking mechanism.
Close-up action shot of a red Diablo hole saw attached to a drill, cutting into a large black metal pipe, demonstrating its metal-cutting capabilities.
Studio product shot of the Diablo 1-11/16 inch Bi-Metal Hole Saw, featuring a red cylindrical body with the white Diablo logo and vertical side slots for plug removal.
Diablo's Mandrel Attachment Speed Side by Side promotional video
DIABLO

Diablo Bi Metal Hole Saw DHS1688 1-11/16 Inch (Snap Lock Plus 2-3/8 Depth Variable Tooth Wood Metal Plastic Aluminum Drilling Accessory)

Only 1 left
SKU: DHS1688
$9.97 USD

Description

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Diablo DHS1688 1-11/16 Inch Bi-Metal Continuous Depth Hole Saw

The Diablo DHS1688 is a 1-11/16-inch diameter bi-metal hole saw engineered to bore deep clearance openings through nail-embedded wood, mild steel, aluminum, plastic, and composite framing. Built with a variable pitch tooth geometry and an extended 2-3/8-inch cutting depth capacity, this heavy-duty cutter delivers 40% deeper single-pass holes through double 2x framing studs compared to standard bi-metal options. Compatible with Diablo's Snap-Lock Plus™ quick-change mandrel system and standard power drills, it enables electricians, plumbers, and contractors to drill conduit pass-throughs and pipe openings with suppressed rotational vibration and tool-free core plug ejection.

Best Used For:

  • Electrical Conduit & Wiring Framing Bores: Slicing 1-1/16-inch trade-size clearance openings through double-stacked 2x4 framing studs, top plates, and metal studs for electrical conduits.
  • Plumbing Supply Line Pass-Throughs: Coring smooth, burr-free holes through floor joists, subfloors, and PVC piping assemblies in a single pass.
  • Sheet Metal & Aluminum Ductwork Drilling: Executing clean circular cuts through thin-gauge sheet metal, aluminum panels, and rigid plastic enclosures.

Key Performance & Safety Features

  • Extended 2-3/8-Inch Cutting Depth: Deep barrel architecture enables single-pass drilling through double studs and multi-layered subfloors.
  • Variable Pitch Tooth Profile: Optimized tooth geometry speeds up chip evacuation while dampening operational chatter for smooth entry and exit.
  • Snap-Lock Plus™ Quick-Release System: Fits universal quick-change mandrels to allow instant, tool-free cup swaps without unchucking.
  • Tool-Free Plug Ejection Access: Side barrel slot design permits rapid core ejection when connected to Snap-Lock mandrel systems.
  • Hardened Bi-Metal Construction: High-speed steel tooth matrix withstands thermal stress and tooth stripping when encountering hidden framing nails.
  • Multi-Substrate Utility: Engineered to cut seamlessly across clean timber, nail-embedded wood, soft metals, aluminum, and PVC.

What's Included

  • (1) Diablo DHS1688 1-11/16" Bi-Metal Hole Saw

Technical Specifications

Brand Manufacturer Diablo® Tools
Model Part Number OEM SKU DHS1688
Hole Saw Cutting Diameter 1-11/16 inches (42-86/100 mm)
Maximum Cutting Depth Capacity 2-3/8 inches (60-32/100 mm)
Cutter Blade Material Formulation Bi-Metal High-Speed Steel Matrix
Tooth Architecture Profile Variable Tooth Geometry
Mandrel Quick-Change System Snap-Lock Plus™ Compatibility
Arbor Included Status Sold Separately (Non-Arbored Cup)
Impact Driver Rated Status No (Rotary Drill / Driver Use Only)
Primary Target Substrates Nail-Embedded Wood, Mild Steel, Aluminum, Plastics

Pro-Tip: When coring through structural mild steel or aluminum, run your drill driver at lower RPMs and apply cutting lubricant to reduce heat friction and prevent dulling the bi-metal teeth.