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Bosch

Bosch T3926SC 13 in. Extension SDS-Plus® for Speedcore™ Thin-wall Core Bits

  • Based on 106 reviews
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Availability: 11 left in stock
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Arrives Sunday, Aug 2
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Size: 13 In. Diameter


Number of Items: 1


Features

  • CORE BIT EXTENSION
  • 13 IN. EXTENSION, SDS-PLUS
  • SCREW CORE BIT ONTO SHANK
  • WORKS WITH THIN-WALL CORE BITS, 1-1/2 IN. OR LARGER

Description

Bosch SDS-plus® thin-wall core bits are optimized for drilling with smaller hammers. Core body range is 1 In. up to 4-3/8 In. with a 3 In. usable cutting depth. Extension plus bit beyond 8 In. should not exceed 600 RPM.

Material: Carbide


Cutting Diameter: 13 Inches


Finish Type: Tungsten Carbide


Shank Type: SDS


Cutting Angle String: 120 Degrees


Brand Name: Bosch


Model: T3926SC


UPC: 000346430110


Unit Count: 1.0 Count


Global Trade Identification Number: 10


Manufacturer: Bosch


Part Number: T3926SC


Number of Pieces: 1


Item Weight: 10.4 ounces


Item Type Name: 13" EXTENSION SDS PLUS (1PC)


Included Components: 1 Piece 13 In. Extension SDS-plus®


Cutting Diameter: 13 Inches


Item Dimensions: 0.86 x 1.6 x 16.75 inches


Minimum Bore Diameter: 6.5 Inches


Material Type: Carbide


Finish Types: Tungsten Carbide


Shank Type: SDS


Surface Recommendation: Brick, Masonry


Cutting Angle String: 120 Degrees


Tool Flute Type: Straight


Point Style: Split Point


Number of Flutes: 1


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Worked in stone
Make sure to pair with a bit. Bosch makes variations of this for all rotary drills. This is meant for a sds plus. I had concern that it would catch on an uneven edge of stone, dull, or crack the stone as it was never specified for such use. It cut through it perfectly. I had to use some sds chisels to pop out the core so I could keep coring. I suspected this would do the job as it was similar to other bits I use at work; however, gambling on a pricey bit and house wall concerned me. Worked great! I placed the vent in a smaller stone as requested against my caution that it might rip it apart since it was so small. It did not; however it did free it from the wall. I secured the stone when installing the dryer vent. Could probably drill most stone shapes, sizes, and arrangements just fine just make sure you have no electric in the wall. ... show more
Reviewed in the United States on June 3, 2018 by Bradley
    • finely made.
Finely made, just the right length for my purposes. Please remember to assemble only when both parts are clean, and anti-seize is a must-have, a must-do.
Reviewed in the United States on June 27, 2025 by Stephen D. Wall
    • Four Stars
Works great.
Reviewed in the United States on October 11, 2015 by kevin machado
    • Quality Bit at a good price. What's not to like?
I used this extension bit together with the Bosch T3915SC core and was pleasantly surprised how easily I was able to go through a 12 inch wall constructed of Cinder block and solid Brick facing. The bit has plenty of life left after one hole, in fact, the carbide tips are as sharp as when I opened the package. I wish I had more holes to bore. ... show more
Reviewed in the United States on May 17, 2014 by Da WAN MAN
    • Actually did not buy it for the speed core
I purchased this to cut off the drill bit and make it into a large nail driver using a spring loaded socket to cup the head of the nail. Works great.
Reviewed in the United States on August 22, 2021 by H
    • Recommend
I recommend the One piece Extension & Pilot Bit over the Arbor/ Extension with the removable Pilot as the One Piece Pilot Bit does not loosen as your drilling the hole and there is no set screw to get in the way. The One Piece will cost more money to use in the long run but the expence is worth it to me to not have to constantly stop and tighten the loose Pilot Bit. Just do your best to avoid rebar in the concrete your drilling thru to prevent premature damage to your drill bit & pilot. ... show more
Reviewed in the United States on May 8, 2016 by Bam
    • Four Stars
as advertised, well made
Reviewed in the United States on June 25, 2018 by arthur dougherty
    • Recommended - Top Quality
Perfect for the Job. Just remember to let the tool do the job. Excellent quality. I used it with a 1" SDS Plus hammer drill and 2 11/16" bit to drill through 8" of solid concrete. Sweet.
Reviewed in the United States on December 3, 2015 by Bill Francis

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