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Quick-Lock Locking Screw – Add


  • Holds up to 1 x 22.5 lbs (10 kg), 6 x 5 lbs (2.2 kg) and 1 x 2.5 lbs (1.1 kg) Quick-Lock weight plates.
  • Use on the Quick-Lock Dumbbell and Kettlebell handles.
  • Weighs 1.5 kilograms.

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Ironmaster is an industry leader in sports fitness equipment for home gyms. Our experts work hard to produce the best, hard-wearing equipment that’s guaranteed to withstand all your hard work.

This Add-on longer locking screw is part of Ironmaster’s patented Quick-Lock technology. It can be used with the Ironmaster adjustable dumbbells or the Ironmaster adjustable kettlebell to hold the weight plates securely.

Because it’s longer than the standard locking screw, this add-on allows you to add more weights to your dumbbell or kettlebell.

This screw will take the kettlebell up to its 80 lbs capacity using the  5 lbs (2.2 kg) weight plates, 2.5 (1.1 kg) weight plates and optional 22.5 lbs (10.5 kg). Note that you can get to this weight by just using additional 5 lbs and 2.5 lbs weight plates.

We know that you need your home gym kit to be quick and easy to adjust. So we created a simple locking screw that tightens in seconds. And it’s flat, so it won’t cause any discomfort if you rest the flat end of your dumbbells on your quads before getting into position.

“The Ironmaster Dumbbells tighten up very snug when you screw the locking pin in. No rattle whatsoever. They feel as tight as the fixed dumbbells at the gym.” – Daniel C.

Why the Quick-Lock Add on Locking Screw?

IronmasterUK kettlebell with weights

High Quality Materials

At Ironmaster we know you are exactly like us, serious about the heavy lifting life and equipment that can keep pace with your hard work. That’s why our quick-lock locking screws are made from the best chrome plated steel – no flimsy plastic or small metal pieces.

Our design, materials, and workmanship means you are getting a product that is worth every penny. But we’ve given you a lifetime guarantee for the product, just to put your mind at rest.

Easy to Use

Ironmaster’s patented Quick-Lock technology makes these the most simple to use locking screws available. Simply slide the locking screw through your weight plates, and secure them with a ¼ to ¾ turn of the screw. It literally takes seconds, with no tools needed. Focus on your workout without worrying that your dumbbell plates might rattle around.

“One thing I particularly liked is that the locking bolt is FLAT. Most folks will sit on the bench a minute to get pumped/concentrate before they actually lay down and start lifting…during this time they will set the weights on their upper thighs. On some of the other weight sets, this is not possible due to the end of the weights not being flat. This may seem small, but it mattered to me.” – Scott B.

We think no home gym should be held back by its equipment. Your personal gym should be a place to focus on what is important without worrying that your equipment might let you down.

Don’t screw yourself over, choose Ironmaster.

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3 lbs (1.5 kg)


7" (18 cm)


1 x longer length add-on locking screw

Load Rating

55 lbs (25 kg) – made up of 1 x 22.5 lbs (10.2 kg) plate, 6 x 5 lbs (2.2 kg) plate and 1 x 2.5 lbs (1.1 kg) plate OR 10 x 5 lbs (2.2 kg) plate and 1 x 2.5 lbs (1.1 kg) plate


Lifetime Warranty


  • Holds up to 1 x 22.5 lbs (10 kg), 6 x 5 lbs (2.2 kg) and 1 x 2.5 lbs (1.1 kg) Quick-Lock weight plates.
  • Use on the Quick-Lock Dumbbell and Kettlebell handles.
  • Secure lock ensures stability and guarantees no looseness or rattling plates.
  • Weighs 3 lbs (1 kg).
  • Lifetime warranty for home use (1st user).



Quick-Lock Dumbbells

Quick-Lock Kettlebell


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