55778 Caliburn Concrete Screw 400pk 19/64

55778 Caliburn Concrete Screw 400pk 19/64" x 3-1/2"

Marsoni

M251S

$315.50

Get it in 3 business days with 1 day shipping. Friday, May 29

55778 Caliburn Concrete Screw 400pk 19/64" x 3-1/2"Overview The GRK Caliburn Concrete Screw 400 Pack (55778) is designed for hardware and tool applications requiring reliable fastening into concrete and similar substrates. Manufactured by GRK Fasteners, this bulk pack provides 400 professionally engineered concrete screws in a 19 64" x 3 1 2" dimension, suited for high volume job site use. Technical Specifications MPN 55778 Brand GRK Fasteners Screw Diameter 19 64" Screw Length 3 1 2" Pack Quantity

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My dog is a mix of a Husky and a Pit Bull. She needs to chew toys, but they usually don't last long. This one seems to be an exception. She took to it right away, and it's still in one piece pi. I assume that the bacon flavor or scent is what keeps her coming back to this toy. This one seems to be her favorite so far.

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Reviewed in the United States on January 13, 2026

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Marcus Schilreff

Carnegie, US

★★★★★ 5

Tough chewer for sure

My dog destroys toys. These are amazing, she chewys on them tell she's a slobbery mess. And they are holding strong. Glad a found these!

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Reviewed in the United States on February 10, 2026

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Carol Roeder

Omaha, US

★★★★★ 5

Fantastic toy for aggressive chewiers!

I have bought two of these for my granddaughters three dogs and they love them! In fact, I only bought one to see if they would, and all 3 played with it! One is a 5 year old pit mix, one is a 9 mo. lab mix, and ine is a 10 year old shepherd mix! Miss Lab goes through toys like melting ice, so they reall have to be well made. Not even Kong toys have made it with her! All three dogs have made it squeak, which we didn't know it did! If you have an aggressive chewier, this is the toy you need to put in the #1 spot on your list to buy!

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Reviewed in the United States on January 28, 2026

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Living it up

Port Orchard, US

★★★★★ 4

Long lasting toy for destructive doggos

Nice toy and seems to be indestructible even with two Boston Terriers trying their best to destroy it.

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Reviewed in the United States on May 7, 2026

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Lee King