Studio view of the black Bosch HDG212 diamond hole saw featuring a segmented diamond grit cutting edge, white Bosch logo, and integral quick change adapter at the base.
Angled side view of the Bosch HDG212 hole saw, highlighting the vacuum-brazed diamond grit rim, side ejection slots, and the mounting interface for wet cutting applications.
"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 view of the black Bosch HDG212 diamond hole saw featuring a segmented diamond grit cutting edge, white Bosch logo, and integral quick change adapter at the base.
Angled side view of the Bosch HDG212 hole saw, highlighting the vacuum-brazed diamond grit rim, side ejection slots, and the mounting interface for wet cutting applications.
"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 HDG218 2-1/8 Inch Diamond Grit Hole Saw Vacuum Brazed Quick Change for Tile Granite and Stone Wet Cutting

In stock
SKU: HDG218
$36.89

Description

PROFESSIONAL PRECISION FOR THE HARDEST TILE AND STONE

Deliver clean, precise cuts in the toughest masonry materials with the Bosch HDG218 2-1/8 Inch Diamond Grit Hole Saw. Engineered for professional tile setters and stonemasons, this high-performance accessory features vacuum-brazed diamond technology that cuts faster and lasts significantly longer than standard grit saws. It is specifically designed to power through hard surfaces like porcelain, granite, slate, natural stone, and glass without chipping or cracking the finish. Whether you are installing bathroom fixtures or routing pipes through countertops, this saw ensures a smooth, high-quality result every time.

Efficiency is built into every aspect of the HDG218 design. The segmented teeth reduce friction and heat buildup while effectively clearing debris, preventing the bit from binding during operation. As part of the patented Bosch Quick Change™ Universal Hole Saw System, this saw allows you to switch between sizes or types in seconds using a compatible mandrel. Integrated side slots make removing material plugs quick and easy, minimizing downtime between cuts. Note: This tool is designed for wet sawing only and must be used with machines on a GFCI-protected circuit.

Key Features

  • Vacuum-Brazed Technology: Fuses diamond grit to the steel body for superior durability and extended cutting life.
  • Fast & Easy Starts: Precision rim design allows for accurate hole starting even on slick, hard materials.
  • Segmented Teeth: Reduces heat and debris buildup for faster, cooler cutting in dense substrates.
  • Quick Change Compatibility: Works with the Bosch Quick Change™ system for rapid, tool-free accessory swaps.
  • Easy Plug Ejection: Side slots allow for fast removal of material cores to keep you working efficiently.
  • Hard Material Specialist: Ideal for cutting porcelain, granite, marble, slate, glass, and ceramic tile.
  • Wet Cut Only: Designed for use with water cooling to protect the diamonds and ensure cut quality.

What's Included

(1) 2-1/8 Inch Diamond Grit Hole Saw (Arbor/Mandrel Sold Separately)

Specifications

Manufacturer Bosch
Model Number HDG218
Saw Diameter 2-1/8 in.
Drilling Depth 1.5 in.
Overall Length 2-15/16 in.
Cutting Material Vacuum-Brazed Diamond Grit
Application Tile, Granite, Stone, Glass
Arbor Type Requires Quick Change Mandrel
Self-Feeding No
Usage Wet Cutting Only
Package Quantity 1

Pro-Tip: To prevent the bit from "walking" when starting a hole on smooth porcelain or granite, angle your drill at 45 degrees to the surface. Gently grind a crescent-shaped groove to establish a starting point, then slowly raise the drill to a vertical 90-degree position as you continue cutting. Always ensure a steady stream of water reaches the cut to prevent overheating.