# Does The Fireball Hardtail 510 Have a Larger Jaw Opening Size Than a Record No. 6?

**URL:** <https://fireball.discourse.group/t/does-the-fireball-hardtail-510-have-a-larger-jaw-opening-size-than-a-record-no-6/3950>\
**Category:** Vises\
**Tags:** hardtail, vise\
**Created:** [September 16, 2025, 9:35pm UTC](https://fireball.discourse.group/t/does-the-fireball-hardtail-510-have-a-larger-jaw-opening-size-than-a-record-no-6/3950 "2025-09-16T21:35:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Fireball-Tool](https://yyz2.discourse-cdn.com/flex036/user_avatar/fireball.discourse.group/fireball-tool/32/4077_2.png) [@Fireball-Tool](https://fireball.discourse.group/u/Fireball-Tool)\
**Post date:** [September 16, 2025, 9:35pm UTC](https://fireball.discourse.group/t/does-the-fireball-hardtail-510-have-a-larger-jaw-opening-size-than-a-record-no-6/3950/1 "2025-09-16T21:35:59Z")

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There’s a long-running claim that the Record No. 6 is “the best vise ever made.”Today’s focus is on the maximum distance the jaws can open. We are going to compare this to the Fireball 510 Hardtail Vise.

 ![The Record Number Six Vise Closed Sitting On A Steel Table](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/b/b1853ede6b23b200cefa9810f130d09dcaa71b04.jpeg)

 ![Fireball Hardtail 510 Vise Open On Table](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/f/f6cf6f60f4f86394040411a167d2fed6709cfcf7.jpeg)

Why does this matter? A greater opening size increases capacity, allowing you to clamp larger parts and giving the vise more versatility.

 ![The Record Number Six Vise Leaning Over Because It Needs To Be Bolted Down When Opened](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/2/2ed4ae1666ae6553b9dbe9df212f38057bc59a93.jpeg)

The Record No. 6 measured 8 inches of opening.

 ![The Record Number Six Vise's Jaws Being Measured Fully Opened To Eight Inches.HEIC](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/0/09a13310e717936f18b5b5247740abe2c0a06962.jpeg)

The Fireball 510 Hardtail measured 12 inches of opening.

 ![Measuring The Jaw Opening Of The Fireball Hardtail 510 Vise](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/8/8fcd66a53c9babce5cfb135d42fe43584da39304.jpeg)

Even though the Fireball 510 is often referred to as a “3/4-scale” version of the larger 614 Hardtail, its opening capacity is significantly greater than the Record No. 6.

 ![The Fireball Hardtail 510 Vise Opens To Twelve Inches](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/c/c946dcd79a017d17810158791fe3c1fef71e6a20.jpeg)

More space, more versatility, more capacity.

 ![The Fireball Hardtail 510 Vise's Fully Boxed Dynamic Jaw VS Record Number Six Dynamic Jaw](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/2/24c890c9405860c3382d8ac5df07b1a205cb9695.jpeg)

 ![The Fireball Hardtail 510 Vise's Jaws Closed](https://canada1.discourse-cdn.com/flex036/uploads/fireball/original/2X/1/1e621d8ad273e5a0d68567670e1cd3d0c0f98fd9.jpeg)

When it comes to opening size. Having more capacity directly translates to increased usefulness in real-world applications where workpieces vary in size.

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**Author:** ![Fireball-Tool](https://yyz2.discourse-cdn.com/flex036/user_avatar/fireball.discourse.group/fireball-tool/32/4077_2.png) [@Fireball-Tool](https://fireball.discourse.group/u/Fireball-Tool)\
**Post date:** [September 17, 2025, 11:33pm UTC](https://fireball.discourse.group/t/does-the-fireball-hardtail-510-have-a-larger-jaw-opening-size-than-a-record-no-6/3950/2 "2025-09-17T23:33:00Z")

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