Studio shot of the black Bosch HDG358 diamond hole saw, showcasing the diamond grit cutting edge, side ejection slots, and integral quick change adapter on the bottom.
Angled studio view of the Bosch HDG358 diamond hole saw, emphasizing the aggressive diamond grit rim and the depth of the cup.
"Best For" infographic displaying three material categories: colored glass and tile, white porcelain tile, and earth-toned ceramic tile squares.
Close-up of a cordless drill with a small diameter diamond bit next to bathroom fixture hardware on a tiled countertop.
A worker uses a cordless drill equipped with the black diamond hole saw to cut a hole in a large beige tile wall for plumbing pipes.
Studio shot of the black Bosch HDG358 diamond hole saw, showcasing the diamond grit cutting edge, side ejection slots, and integral quick change adapter on the bottom.
Angled studio view of the Bosch HDG358 diamond hole saw, emphasizing the aggressive diamond grit rim and the depth of the cup.
"Best For" infographic displaying three material categories: colored glass and tile, white porcelain tile, and earth-toned ceramic tile squares.
Close-up of a cordless drill with a small diameter diamond bit next to bathroom fixture hardware on a tiled countertop.
A worker uses a cordless drill equipped with the black diamond hole saw to cut a hole in a large beige tile wall for plumbing pipes.
BOSCH

Bosch HDG312 3-1/2 Inch Diamond Grit Hole Saw Vacuum Brazed Quick Change for Tile Granite and Stone Wet Cutting

Only 1 left
SKU: HDG312
$52.89

Description

PREMIUM WET CUTTING PERFORMANCE FOR HARD TILE AND STONE

Achieve professional-grade results in the hardest masonry materials with the Bosch HDG312 3-1/2 Inch Diamond Grit Hole Saw. Designed specifically for wet sawing applications, this robust accessory utilizes advanced vacuum-brazed diamond technology to cut faster and last significantly longer than standard grit saws. It is the ideal solution for drilling large diameter holes in tough surfaces such as porcelain, granite, slate, glass, and high-density ceramic tile without cracking or chipping the material.

Engineered for efficiency, the HDG312 features a segmented tooth design that reduces heat buildup and effectively clears debris during the cut. This hole saw is part of the Bosch Quick Change™ Universal Hole Saw System, allowing you to swap sizes or switch between different cutter types in seconds using a compatible mandrel. With integrated side slots for easy plug ejection, this tool ensures you spend less time wrestling with stuck cores and more time getting the job done. Note: For use only with machines designed for wet sawing and on a GFCI-protected circuit.

Key Features

  • Vacuum-Brazed Technology: Diamond grit is fused to the steel body for superior durability and faster cutting speeds.
  • Hard Material Specialist: Optimized for drilling granite, porcelain, glass, slate, and natural stone.
  • Segmented Teeth: Reduces friction and heat while efficiently removing slurry and debris.
  • Quick Change Compatibility: Designed for use with the Bosch Quick Change™ system for tool-free accessory swaps.
  • Easy Plug Removal: Side ejection slots allow for rapid removal of material cores after drilling.
  • Wet Cut Optimized: Requires water cooling to maximize blade life and cut quality.

What's Included

(1) 3-1/2 Inch Diamond Grit Hole Saw (Arbor/Mandrel Sold Separately)

Specifications

Manufacturer Bosch
Model Number HDG312
Saw Diameter 3-1/2 in.
Cutting Material Vacuum-Brazed Diamond Grit
Application Porcelain, Granite, Stone, Glass
Arbor Included No (Requires Quick Change Mandrel)
Tool Compatibility Drills / Drivers (Wet Use Only)
Tooth Design Segmented
Product Weight 0.82 lbs
Package Quantity 1

Pro-Tip: Starting a large hole on a smooth surface like granite can be difficult as the bit may "wander." To start cleanly, hold your drill at a 45-degree angle to the surface. Apply light pressure and run the drill slowly to grind a crescent-shaped groove. Once the groove is established, slowly tilt the drill upright to 90 degrees and continue cutting, ensuring water is constantly applied to the cut zone.