● Grease Guns · Review

Plews 30-107 Easy-On Lock Jaw Coupler

Sponsored link · confirm price and availability on Amazon · updated October 16, 2026

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read

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Best Lock Jaw

Plews 30-107 Easy-On Lock Jaw Coupler

Lock jaw locks onto zerk fitting - stays attached during greasing without holding

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Pros

  • Lock jaw locks onto zerk fitting - stays attached during greasing without holding
  • One-hand operation - free hand holds hose out of the way
  • Useful on fittings that are difficult to reach with two hands

Cons

  • Unlock mechanism requires practice
  • Lower pressure rating than Lincoln

Is the Plews 30-107 Easy-On Lock Jaw Coupler worth it?

Yes, for the right buyer. The Plews 30-107 Easy-On Lock Jaw Coupler ranks #4 in our Best Grease Gun Coupler 2026 list (best lock jaw). Its biggest strength: lock jaw locks onto zerk fitting - stays attached during greasing without holding. The ma in caveat: unlock mechanism requires practice.

Alternatives to the Plews 30-107 Easy-On Lock Jaw Coupler

Products ranked near it in our research, each better for a slightly different buyer.

Buying advice: grease guns

  • 1Lever for power — pistol-grip for one-handed access, cordless for volume.
  • 2Flexible hoses reach fittings behind wheels and under equipment.
  • 3Locking couplers hold onto fittings and reduce leaks.
  • 414 oz cartridges are standard. Check compatibility.
  • 5A bleeder valve helps release trapped air when loading.

Read the full guides

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  • Grease Gun Not Pumping

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FAQ

Common questions

Is the Plews 30-107 Easy-On Lock Jaw Coupler worth buying?

Yes, for the right buyer. The Plews 30-107 Easy-On Lock Jaw Coupler ranks #4 in our Best Grease Gun Coupler 2026 list (best lock jaw). Its biggest strength: lock jaw locks onto zerk fitting - stays attached during greasing without holding. The ma in caveat: unlock mechanism requires practice.

What are the downsides of the Plews 30-107 Easy-On Lock Jaw Coupler?

The ma in trade-offs owners and reviewers point to: unlock mechanism requires practice; lower pressure rating than Lincoln.

What are the key features of the Plews 30-107 Easy-On Lock Jaw Coupler?

Lock jaw mechanism, Stays attached to fitting and One-hand operation.

What are the best alternatives to the Plews 30-107 Easy-On Lock Jaw Coupler?

Worth comparing: Lincoln Industrial 5803 Hydraulic Coupler, Lincoln Industrial 5807 Needle Nose Coupler and Alemite 306931 Mini Coupler. Each ranks near it in our research for a slightly different buyer.

Where can I buy the Plews 30-107 Easy-On Lock Jaw Coupler?

It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.

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