MK Diamond MK-304DT 4-1/2" Premium Grade Tuck Point Blade, Masonry Blade # 155174

MK Diamond MK-304DT 4-1/2 inch Premium Grade laser welded tuck point blade for mortar removal and grout repair, part 155174
 

The MK Diamond 155174 is a 4-1/2 inch MK-304DT Premium Grade tuck point blade with a .250-inch cutting width and a 7/8-to-5/8 inch arbor. The extra-wide segment is what clears a full mortar joint in one pass, which makes it a masonry repair tool rather than a general cutting blade.

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• Best For: Masons and restoration crews raking out mortar joints ahead of repointing, run on a 4-1/2 inch angle grinder or tuck pointer with a 7/8-to-5/8 inch spindle.
• Highlight: At .250 inch the MK Diamond MK-304DT segment is far wider than a standard cutting blade's kerf - cut deliberately wide so the joint opens to repointing width in a single pass instead of two.
• Expert Note: The 7/8-to-5/8 inch arbor fits both common grinder spindles, but tuck pointing throws heavy silica dust - pair it with a shrouded guard and vacuum extraction, since an open grinder in a mortar joint is one of the dustiest jobs on a masonry site.
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Description Reviews FAQ
 

The MK Diamond MK-304DT 4-1/2 inch Premium Grade tuck point blade (part 155174) is built for fast mortar removal. MK Diamond lists tuck point blades for use with angle grinders, circular saws and tuck pointers, and this one is a laser welded blade with a 10mm segment height and a .250 inch width that fits a 7/8-5/8 arbor.

Built for

  • Masons repointing brick and block who need to rake out old mortar joints quickly.
  • Restoration crews doing grout repair and joint cleaning before new mortar goes in.
  • Contractors cleaning concrete surfaces with an angle grinder, circular saw or tuck pointer.

Width and grade

The .250 inch (1/4 inch) width is the cutting width you will rake along the joint, so match it to the joints you are clearing. MK Diamond notes that its premium and supreme grade tuck point blades carry a higher diamond count than standard grade blades and cut fast, and that all grades can be used wet or dry. MK does not publish a maximum RPM on the product page, so check your tool's rated speed against the blade before use.

Specifications

  • Brand and model: MK Diamond MK-304DT
  • Grade: Premium Grade
  • Part number: 155174
  • Diameter: 4-1/2 inch (114mm)
  • Width: .250 inch
  • Arbor: 7/8-5/8
  • Segment height: 10mm
  • Construction: laser welded
  • Application: mortar removal, grout repair, concrete cleaning
  • Use: wet or dry

Frequently asked questions

What is the MK-304DT used for?

MK Diamond lists tuck point blades for fast mortar removal, grout repair and cleaning of concrete applications. The MK-304DT is a Premium Grade tuck point blade.

What tools can I run it on?

MK Diamond says tuck point blades are used with angle grinders, circular saws and tuck pointers. Confirm that your tool takes a 4-1/2 inch blade on a 7/8-5/8 arbor.

Can I use it wet or dry?

MK Diamond states that all grades of its tuck point blades can be used wet or dry.

How wide is the blade?

Part 155174 has a .250 inch (1/4 inch) width, a 10mm segment height and laser welded segments.

Does MK publish a maximum RPM for this blade?

Not on the product page. Check the marking on the blade and your tool's rated speed before use.

Discount Cleaning Products is an authorized MK Diamond dealer, and our US-based team can help you match the right blade, arbor and tool before you order.

Features
  • Removes mortar from masonry joints fast
  • Repairs grout and cleans concrete with an angle grinder, circular saw or tuck pointer
  • Cuts with laser welded 10mm segments
  • Delivers a .250 inch wide cut in a 4-1/2 inch diameter
  • Runs wet or dry on a 7/8-5/8 arbor