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MARSHALLTOWN Diamond Milling Bits and Cones
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At a Glance
Quick Decision Guide
Product Type
Diamond Milling Bit
Grinding Size
3/8"
Material Compatibility
Porcelain, Ceramic & Stone
Use
Wet or Dry
Diamond Grit
Premium Diamond Pattern
Water Feed Required
No
Mount
7/8" (22 mm) Flange
Tool Compatibility
Grinder or Drill with DTTA Adapter
Why Choose This Product
Key Benefits
Fast Grinding
Premium diamond grit removes material quickly
Smooth Results
Produces cleaner, smoother hole modifications
Wet or Dry Use
Operates with or without water
Versatile Compatibility
Works with grinders and compatible drills
No Water Feed Required
Simplifies jobsite setup
Hard Material Performance
Designed for porcelain, ceramic, and natural stone
Product Information
Product Details
Specifications
Brand
MARSHALLTOWN®
Part Number
DTTM38
UPC
035965419239
Product Type
Diamond Milling Bit
Grinding Size
3/8"
Mount
7/8" (22 mm) Flange
Diamond Pattern
Premium Diamond Grit
Primary Function
Enlarge, Shape & Round Existing Holes
Compatible Materials
Porcelain, Ceramic & Natural Stone
Use
Wet or Dry
Water Feed Required
No
Tool Compatibility
Grinder
Drill Compatibility
Drill with MARSHALLTOWN DTTA Drill Adapter (Sold Separately)
Grinding Performance
Fast, Smooth Material Removal
About This Product
Enlarge and Shape Existing Tile Holes
MARSHALLTOWN® Diamond Milling Bits and Cones are designed to enlarge, shape, and round existing holes in porcelain, ceramic, natural stone, and other hard tile materials. Their premium diamond grit provides fast material removal while producing smoother grinding results during tile modification and finishing applications.
Wet or Dry Grinding Performance
These milling accessories are designed for both wet and dry use without requiring a dedicated water feed system. Their durable diamond pattern delivers consistent grinding performance for installers making adjustments to existing openings in tile and stone.
Compatible with Grinders and Drills
Each milling bit and cone features a 7/8" (22 mm) flange for use with compatible grinders. They can also be used with a drill when paired with the MARSHALLTOWN Drill Adapter (DTTA), which is sold separately.
Common Questions
Frequently Asked Questions
What are MARSHALLTOWN Diamond Milling Bits and Cones used for?
They are designed to enlarge, shape, and round existing holes in porcelain, ceramic, natural stone, and other hard tile materials.
Can these milling accessories be used wet or dry?
Yes. They are designed for both wet and dry grinding and do not require a water feed system.
Do I need a water feed system?
No. The milling bits and cones are designed to operate without a dedicated water feed system.
Can these be used with a drill?
Yes. They are compatible with a drill when used with the MARSHALLTOWN DTTA Drill Adapter, which is sold separately.
What materials can these milling tools be used on?
They are designed for porcelain, ceramic, natural stone, and similar hard tile materials.
What flange size do these milling tools use?
Each milling bit and cone features a 7/8" (22 mm) flange.