Tractor Relief Tool™ Sizes

The Original Tractor Relief Tool™ is available in the most popular sizes for Tractors and Industrial applications:

If you do not see your size here, please email us for a special order quote. We can manufacture for other size quick couplers not listed here. We can do custom size pressure relief tools for large business, industrial, R&D, oil and fleet applications. Let us know the size you need! Contact us at Relief@ReliefTool.com

Please determine what size and style coupling you have before ordering here: How To Determine My Size And Style

To help figure your size Check out our Coupler Size Search Tool

Not sure which coupler standard your tractor or skid steer uses? Here's how to identify the four most common hydraulic quick-coupler standards — ISO 16028 (flat face), ISO 7241-A, ISO 7241-B, and ISO 5675/Ag Pioneer — before you order.

ISO 16028 (Flat Face) — sizes 1/4" through 1", common on Bobcat and most skid steers. Distinguished by a flat, flush face with no protruding pins.

ISO 7241-A — sizes 1/4" through 1", found on various ag and construction equipment. Poppet-style with a distinct nose profile.

ISO 7241-B — sizes 1/2" and 1", found on various ag and construction equipment, and also common in the oil industry.

ISO 5675 / Ag Pioneer — the traditional ag coupler, sizes 1/4" through 1/2", common on John Deere, Kubota, and Pioneer-style ag fittings.

Most commonly confused: The 1" and 1/2" ISO 16028 flat-face couplers look similar but are not interchangeable — this is the #1 reason for returns. Measure the outer diameter of the male coupler tip before ordering, not just the hose size.

How to identify your coupler:

Check the coupler's face shape — flat face (ISO 16028) vs. poppet-style (7241-A/B, Ag Pioneer)
Measure the outer diameter of the male coupler tip
Independently confirm your size — there's no universal standard across manufacturers, so don't assume based on your machine's brand or model alone

Shopping for a specific machine or brand? See our guides for John Deere, Bobcat, Kubota, or Pioneer.

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Customer Reviews

★★★★★
"Works great, it's a must have for tractor fittings. I have tried other methods but this is so much easier. They are built well and I like having one for each fitting plus they fit in my small tractor tool box."
Amazon Customer

★★★★★
I fought with hydraulic quick couplers for awhile before I learned of these. These gizmos completely eliminated the frustration of relieving the line pressure so the quick couplers can attach easily. If you have a hydraulic tractor attachment and don't have these, get them now.
Amazon Customer

★★★★★
"This set is the easiest and safest way to release the pressure from quick-connect hydraulics that have been detached under pressure."
Amazon Customer

★★★★★
This piece of equipment is a must have if you own a Tractor or anything with hydraulic lines. This works flawlessly and relieving the pressure off my grapple.
Amazon Customer

★★★★★
"Works great, it's a must have for tractor fittings. I have tried other methods but this is so much easier. They are built well and I like having one for each fitting plus they fit in my small tractor tool box."
Amazon Customer

★★★★★
Removed my backhoe from tractor, tried to put the return hose back on and it would not go - lines were pressurized. Tried to force it into the coupling but it would not budge a millimeter. Ordered this thing up, arrived the next day and depressurized the line in 5 seconds. A must have tool for anyone working with hydraulic couplings regularly.
Amazon Customer

★★★★★
"As advertised, easy to use to relieve hydraulic pressure so the quick release fittings can be attached, with out all the cussing and swearing."
Amazon Customer

Tractor Relief Tool™ Sizes

The Original Tractor Relief Tool™ is available in the most popular sizes for Tractors and Industrial applications:

How To Determine My Size And Style

1/4" ISO 5675 / Ag / Pioneer

1/4" ISO 7241-B

1/4" ISO 16028 Flat Face Skid Steer

3/8" ISO 7241-A

3/8" ISO 5675 / Ag / Pioneer

3/8" ISO 7241-B

3/8" ISO 16028 Flat Face Skid Steer

1/2" ISO 7241-A OR 5675 / Ag / Pioneer

1/2" ISO 7241-B

1/2" ISO 16028 Flat Face Skid Steer

5/8" ISO 16028 Flat Face Skid Steer

3/4" ISO 7241-A

3/4" ISO 7241-B

3/4" ISO 16028 Flat Face Skid Steer

1" ISO 7241-A

1" ISO 7241-B

1" ISO 5675 Ag / Poppet

1" ISO 16028 Flat Face Skid Steer

1" Parker Snap-Tite H Series

Please determine what size and style coupling you have before ordering here: How To Determine My Size And Style

To help figure your size Check out our Coupler Size Search Tool

Not sure which coupler standard your tractor or skid steer uses? Here's how to identify the four most common hydraulic quick-coupler standards — ISO 16028 (flat face), ISO 7241-A, ISO 7241-B, and ISO 5675/Ag Pioneer — before you order.

ISO 16028 (Flat Face) — sizes 1/4" through 1", common on Bobcat and most skid steers. Distinguished by a flat, flush face with no protruding pins.

ISO 7241-A — sizes 1/4" through 1", found on various ag and construction equipment. Poppet-style with a distinct nose profile.

ISO 7241-B — sizes 1/2" and 1", found on various ag and construction equipment, and also common in the oil industry.

ISO 5675 / Ag Pioneer — the traditional ag coupler, sizes 1/4" through 1/2", common on John Deere, Kubota, and Pioneer-style ag fittings.

Most commonly confused: The 1" and 1/2" ISO 16028 flat-face couplers look similar but are not interchangeable — this is the #1 reason for returns. Measure the outer diameter of the male coupler tip before ordering, not just the hose size.

How to identify your coupler:

Check the coupler's face shape — flat face (ISO 16028) vs. poppet-style (7241-A/B, Ag Pioneer)

Measure the outer diameter of the male coupler tip

Independently confirm your size — there's no universal standard across manufacturers, so don't assume based on your machine's brand or model alone

Shopping for a specific machine or brand? See our guides for John Deere, Bobcat, Kubota, or Pioneer.

Customer Reviews

Tractor Relief Tool™

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Tractor Relief Tool™ Sizes

The Original Tractor Relief Tool™ is available in the most popular sizes for Tractors and Industrial applications:

Please determine what size and style coupling you have before ordering here: How To Determine My Size And Style

To help figure your size Check out our Coupler Size Search Tool

Not sure which coupler standard your tractor or skid steer uses? Here's how to identify the four most common hydraulic quick-coupler standards — ISO 16028 (flat face), ISO 7241-A, ISO 7241-B, and ISO 5675/Ag Pioneer — before you order.

ISO 16028 (Flat Face) — sizes 1/4" through 1", common on Bobcat and most skid steers. Distinguished by a flat, flush face with no protruding pins.

ISO 7241-A — sizes 1/4" through 1", found on various ag and construction equipment. Poppet-style with a distinct nose profile.

ISO 7241-B — sizes 1/2" and 1", found on various ag and construction equipment, and also common in the oil industry.

ISO 5675 / Ag Pioneer — the traditional ag coupler, sizes 1/4" through 1/2", common on John Deere, Kubota, and Pioneer-style ag fittings.

Most commonly confused: The 1" and 1/2" ISO 16028 flat-face couplers look similar but are not interchangeable — this is the #1 reason for returns. Measure the outer diameter of the male coupler tip before ordering, not just the hose size.

How to identify your coupler:

Check the coupler's face shape — flat face (ISO 16028) vs. poppet-style (7241-A/B, Ag Pioneer)

Measure the outer diameter of the male coupler tip

Independently confirm your size — there's no universal standard across manufacturers, so don't assume based on your machine's brand or model alone

Shopping for a specific machine or brand? See our guides for John Deere, Bobcat, Kubota, or Pioneer.

Customer Reviews