Minerallac 59980 Relton SDS-Pl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$25.73
Minerallac 59980 Relton SDS-Plus Carbide Masonry Drill Bit, 3/16" x 4-1/4"

Minerallac 59980 Relton SDS-Plus Carbide Masonry Drill Bit, 3/16" x 4-1/4"

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Model: MIN59980

In Stock (leaves warehouse same day if ordered before 3pm ET)

$25.73
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Minerallac 59990 Relton 1/2 x 6" SDS Rotary/Hammer Carbide Masonry Drill Bit

The Minerallac 59990 Relton SDS Rotary/Hammer Carbide Masonry Drill Bit is engineered for electricians and contractors who need clean, precise holes in masonry, block, brick, and concrete during conduit and box installations. Measuring 1/2 x 6" overall, this bit features a tungsten carbide point for aggressive material removal and a steel body with a polished finish for smooth chip evacuation and long tool life. Designed for use with SDS rotary/hammer drills, it delivers consistent performance across repeated masonry drilling applications on the jobsite, making it a reliable addition to any electrical contractor's rough-in toolkit. Its 4-Plus drill point configuration and 4" flute length work together to keep dust and debris clearing efficiently, reducing bit binding and helping maintain drilling speed through dense masonry substrates.

Key Features

  • Trade Size: 1/2 x 6" bit dimension sized for standard SDS rotary/hammer drill applications.
  • Durable Construction: Steel body construction provides strength and durability under repeated hammer-drilling cycles.
  • Point Type: Tungsten carbide point delivers aggressive, long-lasting cutting performance in masonry, brick, and concrete.
  • Drill Point Configuration: 4-Plus drill point design for efficient material removal and smooth hole finish.
  • Flute Length: 4" flute length assists with effective chip and debris evacuation during drilling.
  • Finish: Polished finish helps reduce friction and resist buildup during use.
  • Bit Type: SDS Rotary/Hammer Carbide Drill Bit designed specifically for rotary and hammer-drill masonry work.
  • Pack Quantity: Sold individually as a single-piece bit for easy replacement or stocking.

Technical Specifications

  • Country Of Origin: Germany
  • Drill Point: 4-Plus
  • Flute Length: 4"
  • Number Of Pieces: 1
  • Point Type: Tungsten Carbide
  • Product Finish: Polished Finish
  • Product Material: Steel
  • Product Type: SDS Rotary/Hammer Carbide Drill Bit

Typical Applications

  • Drilling Conduit Mounting Holes in Masonry and Concrete
  • Electrical Box and Bracket Installation on Block or Brick Walls
  • Anchor and Fastener Hole Drilling for Electrical Support Hardware
  • Commercial and Industrial Electrical Rough-In Work
  • Renovation and New Construction Masonry Drilling

Why Minerallac?

Minerallac supplies the Relton line of SDS masonry drill bits with a tungsten carbide point and durable steel body designed to withstand demanding rotary/hammer drilling conditions. The polished finish and 4-Plus drill point configuration reflect attention to consistent, reliable performance for electrical contractors drilling into masonry and concrete. Made in Germany, the Relton 59990 bit reflects a manufacturing pedigree focused on precision and durability. Choose the Minerallac 59990 for dependable, repeatable results on professional jobsites where clean masonry penetrations for conduit, boxes, and anchor hardware are essential to a quality electrical installation.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Type:
Masonry Drill Bit
Product Subgroup:
Drill & Driver Bits
Product Finish:
Polished Finish
Product Material:
Steel
Product Group:
Power Tools & Accessories

Minerallac MIN59980 – Frequently Asked Questions

1) Will the Minerallac Relton SDS masonry bit fit my rotary hammer, or do I need a different shank?
It is an SDS rotary/hammer carbide drill bit, so it drops into the SDS-Plus style chuck on a rotary hammer with no keyed chuck or adapter. It will not work in a standard keyless drill chuck, and it is not an SDS-Max shank. If your tool is SDS-Max, you need a bit like the Milwaukee 48-20-3956 MX4 instead.
2) Can I use this bit to drill concrete and brick, or is it only for block?
The tungsten carbide point is made for masonry, block, brick and concrete, which covers normal electrical rough-in work: conduit mounting holes, box and bracket mounting on block or brick, and anchor holes for support hardware. It is a masonry bit, not a metal or wood bit. For steel you would want a twist bit like the Milwaukee THUNDERBOLT 48-89-2729 or a cobalt bit.
3) I need to drill deeper than 6 inches into concrete - what bit should I use instead of the Minerallac Relton 59990?
The Minerallac Relton SDS Rotary/Hammer carbide masonry bit comes in a 1/2 inch size with a 4 inch flute length, which limits how deep a hole it can carry chips out of. For deep concrete penetrations, the Milwaukee 48-20-3956 MX4 4-cutter bit is a 1 inch by 31 inch by 36 inch SDS-Max bit, so it reaches far deeper. Note the shank difference: the Relton bit is SDS-Plus style for rotary/hammer drills, while the Milwaukee MX4 requires an SDS-Max rotary hammer, so the two are not interchangeable in the same tool.
4) Can the Minerallac Relton 59990 masonry bit be used to drill through a steel strut or box?
No. The Minerallac Relton 59990 is a tungsten carbide pointed SDS rotary/hammer bit built for masonry, block, brick, and concrete, and its carbide tip and SDS shank are made for hammer action rather than clean metal cutting. For drilling steel strut, enclosures, or plate, use a metal-cutting twist bit in a standard chuck instead - for example the Milwaukee 48-89-2302 Cobalt RED HELIX bit, or the Milwaukee 48-89-2729 THUNDERBOLT black oxide-coated bit in 23/64 inch. Many electricians carry both: the SDS carbide bit for the wall, a twist bit for the hardware.
5) What sizes does the Minerallac Relton SDS carbide masonry bit come in?
Two diameters: 3/16 inch, ordered as part number 59980, and 1/2 inch, ordered as part number 59990. Both are sold as a single bit rather than a set, so you order the diameter that matches the anchor or conduit fastener you are setting.
6) I need to drill tile and glass, not concrete. Is this the right bit?
No. The Relton SDS bit is a hammer-action carbide masonry bit and hammering will chip tile or glass. For that work use a diamond grit bit such as the Lenox 12111-10DGHS in 5/8 inch, run in rotation only.
7) What do I use instead of the Relton 59990 for drilling glazed tile or stone facing?
The Minerallac Relton 59990 uses a tungsten carbide point with a 4-Plus drill point and relies on hammer action, which is well suited to block, brick, and concrete but aggressive for thin glazed surfaces. For tile and hard stone, a diamond grit bit such as the Lenox 12111-10DGHS in the D/S-10Dg series, 5/8 inch, cuts by abrasion instead of percussion. Once you are through the facing and into the structural masonry behind it, the Relton SDS bit is the one that keeps going.
8) Why does the 4-Plus point matter when I am drilling a lot of holes in dense concrete?
The 4-Plus drill point and the 4 inch flute work together to clear dust out of the hole. Less packed dust means less bit binding and the bit keeps its drilling speed through dense masonry, which matters when you are setting dozens of anchors in a shift. The polished finish on the steel body also cuts friction and buildup in the flutes.
9) Is the Relton SDS bit made in the USA?
No, it is made in Germany. Minerallac supplies the Relton line, and this bit is German manufactured, which is worth noting if you are filling a domestic-preference or buy-American spec on a public project.
10) Do I get a set or just one bit when I order a Minerallac 59980 or 59990?
One bit. These are sold individually, one piece per part number, which is how most contractors restock the two or three diameters they actually burn through rather than buying a kit.
How fast can I get the Minerallac MIN59980 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Minerallac MIN59980 come with a warranty?
Absolutely. The Minerallac MIN59980 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Minerallac MIN59980?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Minerallac MIN59980 from ZenSupply?
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